Port &1 must use the mandatory method parameter &2

What causes this issue?

Interface method/event &V3& has mandatory parameter &V2&. This is not
specified in port &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?

All interface methods and events including signatures permitted as
inports or outports can be selected from the Create pushbutton.

Error message extract from SAP system. Copyright SAP SE.