ABAP form routine parameter error

What causes this issue?

The FORM routine has FORMAL parameters when there should be none.

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

System Response

How to fix this error?

FORMAL parameters:
Check whether FORM routine &V1& actually exists in ABAP &V2& without
FORMAL parameters.
The ABAPs are called by INCLUDE LIPRTF02. You can see here exactly
how your ABAP is called.

Error message extract from SAP system. Copyright SAP SE.