Diagnosis
You attempted to call a text object which does not exist.
The message can be caused by one of the following:
If the error occurs when you work with the Data Modeler, there isprobably a program error.
If the error occurs when you directly use the function modules forediting Data Modeler text objects, one of the call parameters isincorrect.

Procedure
For 1: Please contact your System Administrator.
For 2: Please select a valid text object ID.