A constant value will be used for all input parameters

What causes this issue?

All the input parameters you have entered use a constant value. This is
not permitted. You must allocate a an input profile to at least one
input parameter.

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?

Correct your entries.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.