# Error Codes The API defines error codes to convey information about the possible issues. They are either generic or specific to an interaction mode (voice or messaging). | Code | Type | Message | |:-|:-|:--| | 10000 | Generic | Subprojects are not available as part of your currently selected subscription plan | | 10001 | Generic | Space is not enabled to use requested feature | | 10002 | Generic | Trial account does not support this feature | | 10003 | Generic | API tokens can only have the following permissions: calling, chat, fax, management, messaging, numbers, pubsub, storage, tasking, and video | | 10004 | Generic | The subproject ID provided cannot be found or does not belong to the project used to authenticate the request. | | 11200 | Generic | HTTP Retrieval Failure | | 11750 | Generic | The response body to SignalWires request is larger than 64 kB. | | 11751 | Generic | MMS -> Media exceeds mobile operator size limit | | 12100 | Generic | Document Parse Failure | | 12300 | Generic | Invalid Content-Type | | 13221 | Generic | Dial -> Number: Invalid Method Value | | 15002 | Generic | Call Progress: Queue Timeout | | 21210 | Generic | From phone number not verified | | 21212 | Generic | Phone number is not in the correct format. Please use E.164 format, i.e. +15558675309 | | 21217 | Generic | A call or SMS is placed to a destination which does not represent a valid phone number | | 4000 | Number | Invalid capabilities for phone number. Allowed options are voice, fax, sms, and mms | | 4001 | Number | Insufficient balance - cost for phone number resource is more than available balance | | 21219 | Generic | To phone number not verified | | 21601 | Generic | From number is not an SMS-capable phone number. | | 21602 | Generic | Message body is required | | 21603 | Generic | The source From phone number is required to send an SMS | | 21604 | Generic | The destination To phone number is required to send an SMS | | 21610 | Generic | Attempt to send to unsubscribed recipient | | 21611 | Generic | This From number has exceeded the maximum number of queued messages | | 21617 | Generic | The concatenated message body exceeds the 1600 character limit | | 21620 | Generic | Invalid media URL(s) | | 21623 | Generic | Number of media files exceeds allowed limit | | 21717 | Messaging | Number must be assigned to a Campaign to send US traffic | | [30002](/guides/how-to-troubleshoot-common-messaging-issues#30002) | Messaging | Account suspended | | [30003](/guides/how-to-troubleshoot-common-messaging-issues#30003) | Messaging | Unreachable destination handset | | 30004 | Messaging | Message blocked or opted out | | [30005](/guides/how-to-troubleshoot-common-messaging-issues#30005) | Messaging | Unknown destination handset | | [30006](/guides/how-to-troubleshoot-common-messaging-issues#30006) | Generic | Landline or unreachable carrier | | [30007](/guides/how-to-troubleshoot-common-messaging-issues#30007) | Messaging | Message marked as spam | | [30008](/guides/how-to-troubleshoot-common-messaging-issues#30008) | Messaging | Unknown error | | 30010 | Messaging | Message price exceeds max price | | [30022](/guides/how-to-troubleshoot-common-messaging-issues#30022) | Messaging | Campaign Registry Throughput Limit Exceeded | | 30027 | Messaging | T-Mobile Daily Message Limit Reached | | 53603 | Messaging | Internal failure while processing media |