How To Fix WM126 - Manual module selection and checking procedure not possible at present

SAP Error Message - Details

• Message type: E = Error

• Message class: WM - IS-R Assortments

• Message number: 126

• Message text: Manual module selection and checking procedure not possible at present

What causes this issue?

Possibility 1:
The listing procedure was defined in Customizing using a combination
which is not possible at present:
manual module selection
checking procedures (profile, classification and layout checks)
Possibility 2:
You are attempting to use a manual module selection procedure in a
function which lists for an individual assortment. This is not allowed
at present.
Possibility 3:
You are attempting to use a manual module selection procedure in a
module maintenance/assignment function. This is not allowed at present.
Possibility 4:
You are attempting to use manual module selection in only one of the
procedures used. It must be used in both.

System Response

INCLUDE ISR_STOP

How to fix this error?

Change the Customizing settings for the listing procedure or use a
different procedure.

Error message extract from SAP system. Copyright SAP SE.