i added my custom doimain in email communication service, and when i am trying to connect it to communication service, that domain is not shown in dropdown even though domain is verified

Firstly i created a email communication service and whitelisted the domain by adding MX record and TXT

then created communication service and trying to add domain in domain section
where in dropdown i am not able to find verified domain

in backend white hitting communication service getting below error
Error sending email: RestError: The specified sender domain has not been linked.

{

"name": "RestError",

"code": "DomainNotLinked",

"statusCode": 404,

"request": {

"url": "https://sd-email-notification.india.communication.azure.com/emails:send?api-version=2023-03-31",

"headers": {

  "content-type": "application/json",

  "accept": "application/json",

  "accept-encoding": "gzip,deflate",

  "user-agent": "azsdk-js-communication-email/1.0.0 core-rest-pipeline/1.16.1 Node/18.20.1 OS/(x64-Windows_NT-10.0.22631)",

  "x-ms-client-request-id": "ad7867f2-eeb7-4725-a751-e6a9468bfff8",

  "host": "REDACTED",

  "x-ms-date": "REDACTED",

  "x-ms-content-sha256": "REDACTED",

  "authorization": "REDACTED",

  "content-length": "310"

},

"method": "POST",

"timeout": 0,

"disableKeepAlive": false,

"streamResponseStatusCodes": {},

"withCredentials": false,

"requestId": "ad7867f2-eeb7-4725-a751-e6a9468bfff8",

"allowInsecureConnection": false,

"enableBrowserStreams": false

},

"details": {

"xMsErrorCode": "DomainNotLinked",

"content-length": "144",

"content-type": "application/json; charset=utf-8",

"mise-correlation-id": "3f576fd0-b4f3-4af1-9b5e-128d70fa0504",

"api-supported-versions": "2021-10-01-preview, 2023-01-15-preview, 2023-03-31",

"x-cache": "CONFIG_NOCACHE",

"strict-transport-security": "max-age=31536000;includeSubDomains",

"x-azure-ref": "0aQ6FZgAAAACfqI4hJoNNQa6HTOZiJ+XASEtCRURHRTA3MjIAOWZjN2I1MTktYThjYy00Zjg5LTkzNWUtYzkxNDhhZTA5ZTgx",

"date": "Wed, 03 Jul 2024 08:40:11 GMT",

"error": {

  "code": "DomainNotLinked",

  "message": "The specified sender domain has not been linked.",

  "target": null,

  "details": null,

  "innererror": null

}

},

"message": "The specified sender domain has not been linked."

}