SAP Message UCFE008 - Structures in form &1 are not suited for each other

Diagnosis
You assigned several structures to the form, which contradict each eachother.
For example, you entered in a structure that you only want to enterdata for version 100 and in another structure, you entered that youonly want to enter data for version 200.

System Response
The form is not stored.

Procedure
Change the definition of the form.