The %1!s! operation is not allowed by the current availability-group configuration. This operation would exceed the maximum ...

The %1!s! operation is not allowed by the current availability-group configuration.  This operation would exceed the maximum number of %2!s! synchronous-commit availability replicas in availability group '%3!s!'.  Change one of the existing synchronous-commit replicas to the asynchronous-commit availability mode, and retry the operation.