SAP Note 22763 - Validation deletion cancels with GB134

Symptom:

A validation was created and assigned to a company code (transaction OB28). If the company code is deleted, the validation cannot be deleted afterwards. Error message is displayed GB134.
Key word: GGB0, substitution, validation, rule

Reason and Prerequisites

The usage list for validations is not updated automatically after the deletion of a company code.

Solution
Start program RGUGBR00. Select the parameter 'Generate validation usage' on the selection screen and execute the program. You can then delete validations that are no longer used.
The same procedure also applies to substitutions and rules. However, you have to select the corresponding parameters for substitution or rule usage on the selection screen.