did the required changes

Author: vaibhavatlan

pyatlan/client/credential.py

@@ -46,11 +46,10 @@ def creator(self, credential: Credential, test: bool = True) -> CredentialRespon
         (`False`) before creation, defaults to `True`.
         :returns: A CredentialResponse instance.
         :raises ValidationError: If the provided `credential` is invalid.
+        :raises InvalidRequestError: If `test` is `False` and the credential contains a `username` or `password`.
         """
 
-        if not test and (
-            credential.username is not None or credential.password is not None
-        ):
+        if not test and any((credential.username, credential.password)):
             raise ErrorCode.UNABLE_TO_CREATE_CREDENTIAL.exception_with_parameters()
 
         raw_json = self._client._call_api(

pyatlan/errors.py

@@ -618,8 +618,8 @@ class ErrorCode(Enum):
     UNABLE_TO_CREATE_CREDENTIAL = (
         400,
         "ATLAN-PYTHON-400-071",
-        "When test is set to False, credentials can only be created without a username and password.",
-        "Either switch test to True or remove the username and password.",
+        "Credentials cannot include a `username` or `password` when `test` is `False`.",
+        "Set `test` to `True` or remove `username` and `password`.",
         InvalidRequestError,
     )
     AUTHENTICATION_PASSTHROUGH = (