Get "ERROR [42501] [IBM][DB2] SQL0551N... does not have the required authorization..." error accessing DB2 Z/OS tables or Cross Connection Query Builder. (4224486)

Error accessing DB2 Z/OS tables OR when creating a Cross Connection Query Builder:

ERRORS:

ERROR [42501] [IBM][DB2] SQL0551N The statement failed because the authorization ID does not have the required authorization or privilege to perform the operation. Authorization ID: "<user or schema>". Operation: "SELECT". Object: "SYSIBM.SYSSCHEMAAUTH".

OR

IBM.Data.DB2.DB2Exception: ERROR [42501] [IBM][DB2] SQL0551N "040861" does not have the required authorization or privilege to perform operation "SELECT" on object "SYSIBM.SYSTABLES". SQLSTATE=42501

Stack trace:

at IBM.Data.DB2.DB2Command.ExecuteReaderObject(CommandBehavior behavior, String method, DB2CursorType reqCursorType, Boolean abortOnOptValueChg, Boolean skipDeleted, Boolean isResultSet, Int32 maxRows, Boolean skipInitialValidation)
at IBM.Data.DB2.DB2Command.ExecuteReaderObject(CommandBehavior behavior, String method)
at IBM.Data.DB2.DB2Command.ExecuteReader(CommandBehavior behavior)
at IBM.Data.DB2.DB2Command.ExecuteDbDataReader(CommandBehavior behavior)
at System.Data.Common.DbCommand.System.Data.IDbCommand.ExecuteReader()
at Quest.Toad.Db.ToadDataAdapter.InternalReadBackground()"