How To Fix W0081 - Maintain the "Function module description" field

SAP Error Message - Details

• Message type: E = Error

• Message class: W0 - Customizing - ISR

• Message number: 081

• Message text: Maintain the "Function module description" field

What causes this issue?

You have maintained determination type 'C' (determination of customer-
specific function modules). You did not, however, enter a function
module.

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?

In this case you must also maintain a function module (description of
function module in determination procedure).

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.