No interface for form &1 can be found.

What causes this issue?

No corresponding interface was found for adobe form &V1&. ,,,,,,,,

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Use the transaction Form Builder: Entry (SFP) to check if a valid
interface has been assigned to form &V1&. The interface must be saved
with the status active.
Check in view Sicht V_T7PBSCA6A if the interface has been assigned to
your form &V1&.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.