Possible errors list
This is a list of all errors handled by our system, which can be returned while using available API methods.
| Error code | Error message | Scope |
|---|---|---|
| 403 | Supplied API key is invalid. | general |
| 400 | Subscriber data was not supplied. | general |
| 400 | No XML data was supplied. | general |
| 400 | Maximum request length exceeded. Most probable cause is too large number of subscribers in MultiData element. You should not add/update more then 100 subscribers using a single API call. | general |
| 500 | UnknownError | general |
| 400 | XML data is invalid. | general |
| 400 | Add subscriber mode is invalid. | general |
| 400 | Found duplicated values for property Id: {0}. | general |
| 400 | Subscriber was added to the list during last 30 days but has not confirmed his subscription. You can use “Force” option to resend confirmation email to the subscriber. | general |
| 400 | endDate’ parameter is invalid. Proper format is YYYY-MM-DD. | general |
| 400 | startDate’ parameter is invalid. Proper format is YYYY-MM-DD. | general |
| 404 | Resource with specified ID not found. | general |
| 400 | startDate’ ({0}) is later than ‘endDate’ ({1}) | general |
| 400 | Neither ID, email nor custom subscriber ID was specified. | general |
| 400 | Trigger is inactive or was deleted. | general |
| 400 | Trigger type is different than ‘API-triggered’. | general |
| 400 | Email is wrong. Please change the email. | general |
| 400 | Command is invalid. Please put correct command. | general |
| 400 | Cannot parse value for property Id: {0}. Please check if appropriate xsi:type attribute is present (http://www.w3.org/TR/xmlschema-2/#built-in-primitive-datatypes). | general |
| 400 | endDate’ parameter is required. | general |
| 400 | startDate’ parameter is required. | general |
| 400 | id’ parameter is not a valid number. | general |
| 400 | id’ parameter is required. | general |
| 400 | email’ parameter is required. | general |
| 400 | listId’ parameter is not a valid number. | general |
| 404 | Message Id is invalid | general |
| 400 | Property Id is missing or invalid. | general |
| 400 | Request is invalid. | general |
| 400 | Spam decoy hit. | general |
| 400 | date’ parameter is invalid. Proper format is YYYY-MM-DD. | general |
| 400 | ‘date’ parameter is required. | general |
| 400 | type’ parameter is not a valid message type. | general |
| 400 | Segment Id is invalid. | general |
| 400 | ‘status’ parameter is incorrect. Correct values are ‘NotConfirmed’, ‘Active’, ‘Unsubscribed’ or ‘Snoozed’ | general |
| 400 | Maximum request length exceeded. | general |
| 400 | Message is currently used in a workflow and cannot be deleted. | general |
| 400 | Subscriber matching mode is invalid. | general |
| 400 | SMS channel has to be activated to use element ‘{0}’. | general |
| 400 | Phone number is incorrect. Please change the phone number. | general |
| 400 | ‘channel’ parameter is invalid. | general |
| 400 | SMS channel has to be activated to use this method | general |
| 400 | Web Push channel has to be activated to use this method | general |
| 400 | Neither ID, email, phone nor custom subscriber ID was specified. | general |
| 400 | The segment count could not be completed. Please validate the segment. | general |
| 403 | API key is incorrect. Please contact ExpertSender staff. | general |
| 406 | Wrong Content type. Content type should be set to text/xml | general |
| 400 | Value provided in ‘channel’ parameter cannot be applied to specified activity type. | general |
| 400 | ‘date’ parameter is invalid. Proper format is YYYY-MM-DD. | general |
| 400 | ‘date’ parameter is required. | general |
| 400 | ‘type’ parameter is required. | general |
| 400 | Activity type ‘{0}’ is unsupported. | general |
| 400 | Subscriber List {0} has been duplicated. | newsletter |
| 400 | Subscriber List {0} does not exist or has been deleted. | newsletter |
| 400 | ManualThrottlingTime field is missing or invalid. Values from 1 to 72 are allowed. | newsletter |
| 400 | At least one non-empty collection: SubscriberLists, SubscriberSegments, SeedLists is required. | newsletter |
| 400 | Recipients element is required. | newsletter |
| 400 | Seed List {0} has been duplicated. | newsletter |
| 400 | Seed List {0} does not exist or has been deleted. | newsletter |
| 400 | Subscriber Segment {0} has been duplicated. | newsletter |
| 400 | Suppression List {0} is of type ‘{1}’ which is not valid for this message. | newsletter |
| 400 | Suppression List {0} has been duplicated. | newsletter |
| 400 | Suppression List {0} does not exist or has been deleted. | newsletter |
| 400 | ThrottlingMethod field is invalid. Supported methods are: {0}. | newsletter |
| 400 | Timezone field is invalid. Refer to documentation for supported timezones list. | newsletter |
| 400 | Columns with specified names were not found in table: {0} | datatables |
| 400 | Request contains duplicated columns. | datatables |
| 400 | Request does not contain required columns. | datatables |
| 400 | Request contains too many columns. | datatables |
| 400 | Empty values for columns: {0} | datatables |
| 400 | Column values are required. | datatables |
| 400 | Value ({0}) is invalid. | datatables |
| 400 | Limit must be a number > 0 | datatables |
| 400 | Row data was not supplied. | datatables |
| 400 | Columns in ‘Order By’ with specified names were not found in table: {0} | datatables |
| 400 | No row matching specified criteria was found. | datatables |
| 400 | Row with specified criteria already exists | datatables |
| 400 | Data tables that are destination of any relationship cannot be cleared. | datatables |
| 400 | Table with specified name not found. | datatables |
| 400 | Validation error, field type:{0} value:{1} | datatables |
| 400 | Columns in ‘Where Conditions’ with specified names were not found in table : {0} | datatables |
| 400 | This row can’t be deleted because this data table has at least one relationship with another table. If you want to delete this row, you should remove the relationship(s) with this data table first. | datatables |
| 400 | These rows can’t be deleted because this data table has at least one relationship with another table. If you want to delete these rows, you should remove the relationship(s) with this data table first. | datatables |
| 400 | Data is required. | exports |
| 400 | No fields or properties to export were specified. | exports |
| 400 | List ID is required for list exports. | exports |
| 400 | Specified list ID is unknown. | exports |
| 400 | Segment ID is required for segment exports. | exports |
| 400 | Specified segment ID is unknown. | exports |
| 400 | Export type is required. | exports |
| 400 | Unknown export type: ‘{0}’. | exports |
| 400 | Unknown field name: ‘{0}’. | exports |
| 400 | Unknown property ID: ‘{0}’. | exports |
| 400 | Field ‘GoalId’ does not contain a valid number. | goals |
| 400 | Field ‘GoalId’ is required. | goals |
| 400 | Goal with ID: {0} is inactive or deleted. | goals |
| 400 | Goal with ID: {0} was not found in database. | goals |
| 400 | Field ‘GoalValue’ does not contain a valid number. | goals |
| 400 | Field ‘MessageGuid’ does not contain a valid GUID. | goals |
| 400 | Message GUID was not recognized. | goals |
| 400 | Field ‘MessageGuid’ is required. | goals |
| 400 | Goal data was not supplied. | goals |
| 400 | ListId parameter contains an invalid value: {0}. | imports |
| 400 | ScheduledTaskId parameter contains an invalid value: {0}. | imports |
| 400 | SuppressionListId parameter contains an invalid value: {0}. | imports |
| 400 | ReportType parameter contains an invalid value: {0}. Refer to documentation for supported report type values. | imports |
| 400 | ReportType field is required. | imports |
| 400 | Import has not yet been completed. Rejected records list is not available. | imports |
| 400 | Data element is required. | imports |
| 400 | ImportSetup.Comment field is empty or invalid. A single character is expected. | imports |
| 400 | ImportSetup.Delimiter field is empty or invalid. A single character is expected. | imports |
| 400 | ImportSetup.Encoding field is invalid. Refer to documentation for supported encodings list. | imports |
| 400 | ImportSetup.Escape field is empty or invalid. A single character is expected. | imports |
| 400 | ImportSetup.MatchingMode is invalid. Allowed values are “Phone”, “Email” or “CustomSubscriberId”. | imports |
| 400 | ImportSetup.Mode field is invalid. Refer to documentation for supported import modes list. | imports |
| 400 | ImportSetup.Quote field is empty or invalid. A single character is expected. | imports |
| 400 | Mapping invalid. Either Column.Field or Column.Property is required. | imports |
| 400 | Mapping invalid. Duplicate mapping found for {0} field. | imports |
| 400 | Mapping invalid. Value in MatchingMode was not mapped. | imports |
| 400 | Mapping invalid. Unknown field: {0}. | imports |
| 400 | Mapping invalid. Unknown property with ID: {0}. | imports |
| 400 | Source element is required. | imports |
| 400 | Source.Url field is not a valid URL address. | imports |
| 400 | Source.Url field is required. | imports |
| 400 | Source.Url field is too long. {0} characters max. | imports |
| 400 | ubscriber List {0} does not exist or has been deleted. | imports |
| 400 | Target.Name field is required. | imports |
| 400 | Target element is required. | imports |
| 400 | Password may not be longer than {0} characters. | imports |
| 400 | Synchronization is forbidden for units with SMS/MMS integration enabled | imports |
| 400 | Charset field is invalid. Supported charsets are: {0}. | lists |
| 400 | ClickTrackingDomain field is invalid. | lists |
| 400 | ConfirmationEmail.FromEmail field is invalid. | lists |
| 400 | ConfirmationEmail.FromEmail field is required. | lists |
| 400 | ConfirmationEmail.FromName field is required. | lists |
| 400 | ConfirmationEmail.Html field does not contain required element: *[link_confirm]*. | lists |
| 400 | ConfirmationEmail.Html field does not contain required element: *[link_confirm]*. | lists |
| 400 | ConfirmationEmail.Plain field does not contain required element: *[link_confirm]*. | lists |
| 400 | ConfirmationEmail.Plain field is required. | lists |
| 400 | ConfirmationEmail.AmpHtml field does not contain required element: *[link_confirm]*. | lists |
| 400 | ConfirmationEmail.Subject field is required. | lists |
| 400 | FriendlyName field is too long. 100 characters max. | lists |
| 400 | GeneralSettings element is required. | lists |
| 400 | Language field is invalid. Supported languages are: {0}. | lists |
| 400 | Data element is required. | lists |
| 400 | Name field is required. | lists |
| 400 | List name is too long. 100 characters max. | lists |
| 400 | The number of subscriber’s lists reached a limit of 32767. Please contact ExpertSender customer support. | lists |
| 400 | OptInMode field is invalid. Supported modes are: {0}. | lists |
| 400 | PreferencesChangeUrl is not a valid URL address. | lists |
| 400 | Reminder{0}.FromEmail field is invalid. | lists |
| 400 | Reminder{0}.FromEmail field is required. | lists |
| 400 | Reminder{0}.FromName field is required. | lists |
| 400 | Reminder{0}.Html field does not contain required element: *[link_confirm]*. | lists |
| 400 | Reminder{0}.Html field is required. | lists |
| 400 | Reminder{0}.AmpHtml field does not contain required element: *[link_confirm]*. | lists |
| 400 | Reminder1.Interval is higher than or equal to the Reminder2.Interval | lists |
| 400 | Reminder{0}.Interval is too high. | lists |
| 400 | Reminder{0}.Interval field is invalid. | lists |
| 400 | Reminder{0}.Interval is too low. | lists |
| 400 | Reminder{0}.Interval field is required. | lists |
| 400 | Reminder{0}.Plain field does not contain required element: *[link_confirm]*. | lists |
| 400 | Reminder{0}.Plain field is required. | lists |
| 400 | Reminder{0}.Subject field is required. | lists |
| 400 | RemovalPageUrl is not a valid URL address. | lists |
| 400 | Reminder1 is required in case of Reminder2 is defined. | lists |
| 400 | SubscriptionConfirmPageUrl is not a valid URL address. | lists |
| 400 | SubscriptionThankYouPageUrl is not a valid URL address. | lists |
| 400 | List was deleted. | lists |
| 400 | List name cannot be empty. | lists |
| 400 | Attachment ‘Content’ field is required. | newsletters |
| 400 | Attachment ‘FileName’ field is required. | newsletters |
| 400 | Maximum attachment size for message exceeded. Max is {0}KB. | newsletters |
| 400 | Channel {0} is invalid or unavailable. | newsletters |
| 400 | Channel {0} is invalid or unavailable. | newsletters |
| 400 | Channel.Ip field is missing or empty. | newsletters |
| 400 | Channel.Percentage field is missing or invalid. Allowed values are 1-100. | newsletters |
| 400 | Channels percentage sum should be 100. | newsletters |
| 400 | It is not possible to have both Content From URL and Attachments elements at the same time. | newsletters |
| 400 | Content element is required. | newsletters |
| 400 | Error downloading file from {0}: {1} | newsletters |
| 400 | Dynamic Content Error, field {0}: {1} | newsletters |
| 400 | Footer field is invalid. Footer {0} does not exist or was deleted. | newsletters |
| 400 | FromEmail field is invalid. | newsletters |
| 400 | FromEmail field is required. | newsletters |
| 400 | FtpAuth field is invalid. Supported authentication methods are: {0}. | newsletters |
| 400 | Header field is invalid. Header {0} does not exist or was deleted. | newsletters |
| 400 | Either Html or Plain content must be present. | newsletters |
| 400 | Either Html or Plain content must be present as fallback when sending AMP for Email content. | newsletters |
| 400 | AMP for Email integration is disabled. Please contact ExpertSender staff. | newsletters |
| 400 | Data element is required. | newsletters |
| 400 | Subject field is required. | newsletters |
| 400 | Tag cannot be empty. | newsletters |
| 400 | TimeOptimizationPeriod field is invalid. Allowed values are: 24h, 7d. | newsletters |
| 400 | UrlIntegration does not exist or is deleted. | newsletters |
| 400 | ContentFromUrl.Url is not a valid URL address. | newsletters |
| 400 | ContentFromUrl.Url field is required. | newsletters |
| 400 | System Tags cannot be used as a custom tag. Please change the name of a tag if you use one of the following values: {0}. | newsletters |
| 400 | ListIds parameter contains an invalid value: {0}. | DeleteSubscriber |
| 400 | RemoveTypes parameter contains an invalid value: {0}. Refer to documentation for supported remove types list. | DeleteSubscriber |
| 400 | CampaignDescription field is required. | smsNewsletter |
| 400 | Content element is required. | smsNewsletter |
| 400 | Data element is required. | smsNewsletter |
| 400 | Plain content must be present. | smsNewsletter |
| 400 | Sender ‘{0}’ does not exist or has been deleted. | smsNewsletter |
| 400 | Sender field is required. | smsNewsletter |
| 400 | Tag cannot be empty. | smsNewsletter |
| 400 | System Tags cannot be used as a custom tag. Please change the name of a tag if you use one of the following values: {0}. | smsNewsletter |
| 404 | No active transactional message matching specified criteria was found. | snippets |
| 400 | One of parameters: Id, CustomSubscriberId or Email is required. | snoozedSubscribers |
| 400 | One of parameters: Id, CustomSubscriberId, Email or Phone is required. | snoozedSubscribers |
| 400 | ListIds parameter contains an invalid value: {0}. | snoozedSubscribers |
| 400 | SnoozeWeeks parameter is missing or invalid. Valid values are {0} to {1}. | snoozedSubscribers |
| 400 | Unknown subscriber or invalid CustomSubscriberId value. | snoozedSubscribers |
| 400 | Unknown subscriber or invalid Email value. | snoozedSubscribers |
| 400 | Unknown subscriber or invalid Id value. | snoozedSubscribers |
| 400 | Invalid ListId or subscriber not active on the list. | snoozedSubscribers |
| 400 | Unknown subscriber or invalid Phone value. | snoozedSubscribers |
| 404 | Specified list was not found. | subscriber |
| 404 | Subscriber with {0} – {1} – not found. | subscriber |
| 404 | Subscriber not found on specified list. | subscriber |
| 400 | Unsubscribing from transactional message is not possible. | subscriber |
| 400 | ‘{0}’ and ‘{1}’ parameters cannot contain the same value. | summaryStatistics |
| 400 | Value of ‘scope’ parameter is invalid. Please check the documentation for available scopes. | summaryStatistics |
| 400 | Value of ‘scopeValue’ parameter is required if ‘scope’ is specified. | summaryStatistics |
| 400 | scopeValue’ parameter contains unknown domain family name. | summaryStatistics |
| 400 | scopeValue’ parameter contains invalid domain name. | summaryStatistics |
| 400 | scopeValue’ parameter contains invalid Goal ID. | summaryStatistics |
| 400 | scopeValue’ parameter contains unknown Goal ID. | summaryStatistics |
| 400 | Value of ‘grouping’ parameter is invalid. Please check the documentation for available groupings. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains unknown IP address. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains invalid List ID. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains unknown List ID. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains unknown message type. Please check the documentation for valid message types. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains invalid Segment ID. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains unknown Segment ID. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains invalid Vendor. Max 50 characters. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains unknown tag name. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains unknown send time optimization type. Please check the documentation for valid send time optimization types. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains unknown time travel optimization type. Please check the documentation for valid time travel optimization types. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains unknown reading environment type. Please check the documentation for valid reading environment types. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains unknown provider name. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains unknown Sender name. | summaryStatistics |
| 400 | ‘scopeValue’ parameter contains unknown MobileOS name. | summaryStatistics |
| 400 | Entry is not a valid dialing prefix. | suppresionList |
| 400 | Entry is not a valid email, domain or MD5. | suppresionList |
| 400 | Entry is not a valid phone number. | suppresionList |
| 400 | ‘entryType’ parameter is invalid. Allowed values: ‘phone’ or ‘prefix’. | suppresionList |
| 400 | Data element is required. | suppresionList |
| 400 | Name field is required. | suppresionList |
| 400 | List name is too long. 256 characters max. | suppresionList |
| 400 | ImportRule field is invalid. Supported values are: {0}. | suppresionList |
| 400 | Type field is invalid. Supported values are: {0}. | suppresionList |
| 400 | type parameter value is invalid. Valid values are: Header, Footer. | templates |
| 400 | ‘Content’ field for ‘{0}’ attachment does not contain valid, Base64 encoded binary data. | transactionals |
| 400 | Attachment ‘Content’ field is required. | transactionals |
| 400 | Attachment ‘FileName’ field is required. | transactionals |
| 400 | List does not exist in the database or was deleted. | transactionals |
| 400 | Receivers data was not supplied. | transactionals |
| 400 | Subscriber does not exist in the database. | transactionals |
| 400 | {0}: Subscriber email is invalid. | transactionals |
| 400 | Transactional message is inactive or was deleted. | transactionals |
| 400 | Subscriber has unsubscribed from the list. | transactionals |
| 400 | Subscriber is blacklisted. | transactionals |
| 400 | Subscriber {0} is blacklisted | transactionals |
| 400 | Email MD5 is invalid | transactionals |
| 400 | Email SHA256 is invalid | transactionals |
| 400 | Channel {0} is invalid or unavailable. | transactionals |
| 400 | Channel.Ip field is missing or empty. | transactionals |
| 400 | Channel.Percentage field is missing or invalid. Allowed values are 1-100. | transactionals |
| 400 | Channels percentage sum should be 100. | transactionals |
| 400 | It is not possible to have both Content From URL and Attachments elements at the same time. | transactionals |
| 400 | Content element is required. | transactionals |
| 400 | Error downloading file from {0}: {1} | transactionals |
| 400 | Footer field is invalid. Footer {0} does not exist or was deleted. | transactionals |
| 400 | FromEmail field is invalid. | transactionals |
| 400 | FromName field is required. | transactionals |
| 400 | FtpAuth field is invalid. Supported authentication methods are: {0}. | transactionals |
| 400 | Header field is invalid. Header {0} does not exist or was deleted. | transactionals |
| 400 | Either Html or Plain content must be present. | transactionals |
| 400 | Either Html or Plain content must be present as fallback when sending AMP for Email content. | transactionals |
| 400 | AMP for Email integration is disabled. Please contact ExpertSender staff. | transactionals |
| 400 | Subject field is required. | transactionals |
| 400 | Suppression List {0} does not exist or has been deleted. | transactionals |
| 400 | Tag cannot be empty. | transactionals |
| 400 | Data element is required. | transactionals |
| 400 | UrlIntegration does not exist or is deleted. | transactionals |
| 400 | ContentFromUrl.Url is not a valid URL address. | transactionals |
| 400 | ContentFromUrl.Url field is required. | transactionals |
| 400 | Maximum attachment size for message exceeded. Max is 400KB. | transactionals |
| 400 | Transactional message is draft or was deleted. | transactionals |
| 400 | Message is currently used in a workflow and cannot be updated. | transactionals |
| 400 | GoogleAnalyticsTags elements have too long values. Max is 255 characters. | transactionals |
| 400 | Attachment’s FileName is too long. Max is 256 characters. | transactionals |
| 400 | Channel IP “{0}” has been duplicated. | transactionals |
| 400 | Receiver element is required. | transactionals |
| 400 | Channel configuration for message {0} is invalid. Please check and correct the configuration before sending. | transactionals |
| 400 | No email address for Subscriber with Id {0}. | transactionals |
| 400 | One of parameters: Id, Email or EmailMd5 is required. | transactionals |
| 400 | System Tags cannot be used as a custom tag. Please change the name of a tag if you use one of the following values: {0}. | transactionals |
| 400 | Data element is required. | webpush |
| 400 | Content element is required. | webpush |
| 400 | Subject element is required. | webpush |
| 400 | Body element is required. | webpush |
| 400 | Link element is required. | webpush |
| 400 | Url and Title is missing in Action{0} element. | webpush |
| 400 | Url is required in Action element | webpush |
| 400 | Title is required in Action{0} element. | webpush |
| 400 | If you want to enable Open Tracking you need to provide icon image | webpush |
| 400 | Tag cannot be empty. | webpush |
| 400 | Url for Icon/BigImage/Action1 Icon/Action2 Icon is not a valid URL address | webpush |
| 400 | File in {0} is not an image (PNG,JPEG) | webpush |
| 400 | Icon element is required when open tracking is enabled | webpush |
| 400 | FileName for Icon/BigImage/Action1 Icon/Action2 Icon is not a valid file name | webpush |
| 400 | Field ‘CustomEventId’ does not contain a valid number. | workflowsCustomEvents |
| 400 | Field ‘CustomEventId’ is required. | workflowsCustomEvents |
| 400 | Custom event with ID: {0} is inactive or deleted. | workflowsCustomEvents |
| 400 | Custom event with ID: {0} was not found in database. | workflowsCustomEvents |
| 400 | DataField ‘Name’ field is required. | workflowsCustomEvents |
| 400 | ‘Name’ field in DataField must be unique. Invalid values: {0} | workflowsCustomEvents |
| 400 | ‘Name’ field value for DataField ‘{0}’ is too long. | workflowsCustomEvents |
| 400 | ‘Type’ field value for DataField ‘{0}’ is invalid. | workflowsCustomEvents |
| 400 | ‘Type’ field is required for DataField ‘{0}’. | workflowsCustomEvents |
| 400 | Value’ field value for DataField ‘{0}’ is invalid. | workflowsCustomEvents |
| 400 | ‘Value’ field is required for DataField ‘{0}’. | workflowsCustomEvents |
| 400 | ‘Value’ field value for DataField ‘{0}’ is too long. | workflowsCustomEvents |
| 400 | Custom event data was not supplied. | workflowsCustomEvents |
| 400 | Subscriber with specified custom id was not found. Make sure ‘CustomSubscriberId’ field is valid and contains id of an existing subscriber. | workflowsCustomEvents |
| 400 | Field ‘SubscriberEmail’ does not contain a valid email. | workflowsCustomEvents |
| 400 | Subscriber with specified email was not found. Make sure ‘SubscriberEmail’ field is valid and contains email of an existing subscriber. | workflowsCustomEvents |
| 400 | Field ‘SubscriberId’ does not contain a valid number. | workflowsCustomEvents |
| 400 | Subscriber with specified ID was not found. Make sure ‘SubscriberId’ field is valid and contains Id of existing subscriber. | workflowsCustomEvents |
| 400 | No subscriber information. Please specify ‘SubscriberId’, ‘CustomSubscriberId’, ‘SubscriberEmail'{0}. | workflowsCustomEvents |
| 400 | Field ‘SubscriberPhone’ does not contain a valid phone number. | workflowsCustomEvents |
| 400 | Subscriber with specified phone number was not found. Make sure ‘SubscriberPhone’ field is valid and contains phone number of an existing subscriber. | workflowsCustomEvents |
| 400 | Field ‘SubscriberWebPushId’ does not contain a valid guid. | workflowsCustomEvents |
| 400 | Subscriber with specified Web Push ID was not found. Make sure ‘SubscriberWebPushId’ field is valid and contains Web Push ID of an existing subscriber. | workflowsCustomEvents |