--- title: "Changes to Create a Call" method: POST path: "/Accounts/{AccountSid}/Calls" --- # Changes to Create a Call `POST /Accounts/{AccountSid}/Calls` > Every recorded change to this operation, newest first. ## Timeline Changed in 12 of 47 revisions. - **2026-05-12** `2916d5e3072e`: 5 breaking, 7 info - **2026-05-12** `5344c0c93a4c`: 1 breaking, 6 info - **2026-03-04** `2e516ba2383f`: 19 breaking, 2 info - **2026-01-21** `250c3ae23842`: 2 warning - **2026-01-20** `dce1bcef69f0`: 1 info - **2026-01-19** `d5fbaaddfa3e`: 19 breaking, 14 warning, 49 info - **2026-01-15** `479ede876c89`: 4 breaking, 1 info - **2026-01-15** `a10b019314cd`: 2 info - **2026-01-15** `07f73f74a61d`: 1 breaking, 1 info - **2026-01-15** `6b2611cfa74b`: 3 breaking - **2026-01-15** `686ef84c2abc`: 1 breaking, 3 info - **2026-01-15** `3c88f14db21e`: 7 breaking, 3 warning, 21 info ## Changes - **2026-05-12** `2916d5e3072e`: 5 breaking, 7 info - added `#/components/schemas/uuid` to the `ApplicationSid` request property `allOf` list - the `account_sid` response's property type changed from `string` to no type, and format from `uuid` to no format for status `200` - the `parent_call_sid` response's property format changed from `uuid` to no format for status `200` - the `phone_number_sid` response's property format changed from `uuid` to no format for status `200` - the `sid` response's property type changed from `string` to no type, and format from `uuid` to no format for status `200` - the `ApplicationSid` request property type was generalized from `string` to no type, and format from `uuid` to no format - added `#/components/schemas/uuid` to the `account_sid` response property `allOf` list for the response status `200` - added `#/components/schemas/uuid` to the `sid` response property `allOf` list for the response status `200` - added `#/components/schemas/uuid` to the `parent_call_sid` response property `anyOf` list for the response status `200` - added `#/components/schemas/uuid` to the `phone_number_sid` response property `anyOf` list for the response status `200` - removed `subschema #1` from the `parent_call_sid` response property `anyOf` list for the response status `200` - removed `subschema #1` from the `phone_number_sid` response property `anyOf` list for the response status `200` - **2026-05-12** `5344c0c93a4c`: 1 breaking, 6 info - added 'unevaluatedProperties' constraint to the request body - added 'unevaluatedProperties' constraint to the response body for the status `200` - added 'unevaluatedProperties' constraint to the response body for the status `400` - added 'unevaluatedProperties' constraint to the response body for the status `401` - added 'unevaluatedProperties' constraint to the response body for the status `422` - added 'unevaluatedProperties' constraint to the `errors/items/` response property for the status `400` - added 'unevaluatedProperties' constraint to the `subresource_uris/allOf[#/components/schemas/CallSubresourceUris]/` response property for the status `200` - **2026-03-04** `2e516ba2383f`: 19 breaking, 2 info - response property `annotation` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `audio_in_mos` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `audio_out_jitter_avg` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `audio_out_jitter_max` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `audio_out_jitter_min` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `audio_out_lost` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `audio_rtt_avg` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `audio_rtt_max` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `audio_rtt_min` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `caller_name` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `end_time` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `forwarded_from` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `group_sid` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `parent_call_sid` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `phone_number_sid` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `price` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `sip_result_code` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `start_time` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - response property `subresource_uris/allOf[#/components/schemas/CallSubresourceUris]/notifications` list-of-types was widened by adding types `null` to media type `application/json` of response `200` - removed `#/components/schemas/AnsweredBy` from the `answered_by` response property `allOf` list for the response status `200` - added `#/components/schemas/AnsweredBy, subschema #2` to the `answered_by` response property `anyOf` list for the response status `200` - **2026-01-21** `250c3ae23842`: 2 warning - removed the request property `Laml` - removed the request property `Twiml` - **2026-01-20** `dce1bcef69f0`: 1 info - added the non-success response with the status `422` - **2026-01-19** `d5fbaaddfa3e`: 19 breaking, 14 warning, 49 info - the request property `From` became required - the request property `To` became required - added the pattern `^[\d#*wW]{1,32}$` to the request property `SendDigits` - added the pattern `^\d+\.?\d{0,4}$` to the request property `MaxPricePerMinute` - the `AsyncAmdStatusCallback` request property format changed from no format to `uri` - the `FallbackUrl` request property format changed from no format to `uri` - the `RecordingStatusCallback` request property format changed from no format to `uri` - the `StatusCallback` request property format changed from no format to `uri` - the `Timeout` request property type changed from `string` to `integer`, and format from no format to `int32` - the `Url` request property format changed from no format to `uri` - the response property `annotation` became nullable for the status `200` - the response property `answered_by` became nullable for the status `200` - the response property `end_time` became nullable for the status `200` - the response property `forwarded_from` became nullable for the status `200` - the response property `parent_call_sid` became nullable for the status `200` - the response property `phone_number_sid` became nullable for the status `200` - the response property `price` became nullable for the status `200` - the response property `start_time` became nullable for the status `200` - the response property `subresource_uris/allOf[#/components/schemas/CallSubresourceUris]/notifications` became nullable for the status `200` - the `SendDigits` request property's maxLength was set to `32` - the `MachineDetectionSilenceTimeout` request property's max was set to `10000.00` - the `MachineDetectionSpeechEndThreshold` request property's max was set to `5000.00` - the `MachineDetectionSpeechThreshold` request property's max was set to `6000.00` - the `MachineDetectionTimeout` request property's max was set to `120.00` - the `MachineWordsThreshold` request property's max was set to `100.00` - the `Timeout` request property's max was set to `600.00` - the `MachineDetectionSilenceTimeout` request property's min was set to `2000.00` - the `MachineDetectionSpeechEndThreshold` request property's min was set to `500.00` - the `MachineDetectionSpeechThreshold` request property's min was set to `1000.00` - the `MachineDetectionTimeout` request property's min was set to `1.00` - the `MachineWordsThreshold` request property's min was set to `1.00` - the `Timeout` request property's min was set to `1.00` - added the new `no-answer` enum value to the `status/allOf[#/components/schemas/CallStatus]/` response property for the response status `200` - added the new optional request property `Laml` - added the new optional request property `RecordingStatusCallbackEvent` - added the new optional request property `Twiml` - the `AsyncAmdPartialResults` request property default value `false` was added - the `AsyncAmdStatusCallbackMethod` request property default value `POST` was added - the `MachineDetection` request property default value `none` was added - the `Record` request property default value `false` was added - …42 more - **2026-01-15** `479ede876c89`: 4 breaking, 1 info - removed the required property `code` from the response with the `400` status - removed the required property `message` from the response with the `400` status - removed the required property `more_info` from the response with the `400` status - removed the required property `status` from the response with the `400` status - added the optional property `errors` to the response with the `400` status - **2026-01-15** `a10b019314cd`: 2 info - the request property `From` became optional - the request property `To` became optional - **2026-01-15** `07f73f74a61d`: 1 breaking, 1 info - removed the media type `application/json` from the request body - added the media type `application/x-www-form-urlencoded` to the request body - **2026-01-15** `6b2611cfa74b`: 3 breaking - the request property `ApplicationSid` became not nullable - the request property `SipAuthPassword` became not nullable - the request property `SipAuthUsername` became not nullable - **2026-01-15** `686ef84c2abc`: 1 breaking, 3 info - the response property `annotation` became nullable for the status `200` - the request property `ApplicationSid` became nullable - the request property `SipAuthPassword` became nullable - the request property `SipAuthUsername` became nullable - **2026-01-15** `3c88f14db21e`: 7 breaking, 3 warning, 21 info - added the new path request parameter `AccountSid` - removed the media type `application/x-www-form-urlencoded` from the request body - the `answered_by` response's property type changed from `string` to no type for status `200` - the `api_version` response's property type changed from no type to `string` for status `200` - the `direction` response's property type changed from `string` to no type for status `200` - the `status` response's property type changed from `string` to no type for status `200` - the `subresource_uris` response's property type changed from `object` to no type for status `200` - removed the optional property `errors` from the response with the `400` status - removed the optional property `subresource_uris/notifications` from the response with the `200` status - removed the optional property `subresource_uris/recordings` from the response with the `200` status - added the media type `application/json` to the request body - added the non-success response with the status `401` - added `#/components/schemas/AnsweredBy` to the `answered_by` response property `allOf` list for the response status `200` - added `#/components/schemas/CallDirection` to the `direction` response property `allOf` list for the response status `200` - added `#/components/schemas/CallStatus` to the `status` response property `allOf` list for the response status `200` - added `#/components/schemas/CallSubresourceUris` to the `subresource_uris` response property `allOf` list for the response status `200` - removed the `busy` enum value from the `status` response property for the response status `200` - removed the `canceled` enum value from the `status` response property for the response status `200` - removed the `completed` enum value from the `status` response property for the response status `200` - removed the `failed` enum value from the `status` response property for the response status `200` - removed the `human` enum value from the `answered_by` response property for the response status `200` - removed the `in-progress` enum value from the `status` response property for the response status `200` - removed the `inbound` enum value from the `direction` response property for the response status `200` - removed the `machine` enum value from the `answered_by` response property for the response status `200` - removed the `outbound` enum value from the `direction` response property for the response status `200` - removed the `queued` enum value from the `status` response property for the response status `200` - removed the `ringing` enum value from the `status` response property for the response status `200` - added the required property `code` to the response with the `400` status - added the required property `message` to the response with the `400` status - added the required property `more_info` to the response with the `400` status - added the required property `status` to the response with the `400` status --- [Operation](https://skmtc.dev/signalwire/apis/compatibility-api/docs/Accounts/:AccountSid/Calls/post.md) - [API](https://skmtc.dev/signalwire/apis/compatibility-api.md) - [Page](https://skmtc.dev/signalwire/apis/compatibility-api/changes/Accounts/:AccountSid/Calls/post)