curl -i --user AUTH_ID:AUTH_TOKEN \
    -H "Content-Type: application/json" \
    -d '{"username": "testcredential", "Password": "test12332434!"}'  \
    https://api.plivo.com/v1/Account/{auth_id}/Zentrunk/Credential/f19c4773-4ae6-4b75-92ea-9cf3ea4227d6/

{
  "api_id": "4e1f954c-baf3-11ec-bafe-0242ac110003",
  "message": "Credential updated successfully.",
  "credential_uuid": "f19c4773-4ae6-4b75-92ea-9cf3ea4227d6"
}
Updates a credential name, username, or password. API Endpoint
POST
https://api.plivo.com/v1/Account/{auth_id}/Zentrunk/Credential/{credential_uuid}/

​
Arguments

name
string

Friendly name for the credentials list.

username
string

Username to be sent in response to an auth challenge of the SIP INVITE.

Password
string

Password to authenticate the SIP request.

​
Returns

Returns a confirmation that the credential was updated. 
curl -i --user AUTH_ID:AUTH_TOKEN \
    -H "Content-Type: application/json" \
    -d '{"username": "testcredential", "Password": "test12332434!"}'  \
    https://api.plivo.com/v1/Account/{auth_id}/Zentrunk/Credential/f19c4773-4ae6-4b75-92ea-9cf3ea4227d6/

{
  "api_id": "4e1f954c-baf3-11ec-bafe-0242ac110003",
  "message": "Credential updated successfully.",
  "credential_uuid": "f19c4773-4ae6-4b75-92ea-9cf3ea4227d6"
}