Symptom
You want to use serial number for a product, however, when you manually assign it in a production order, the error message "Number range ** is not an external range" (Message no. IS041) shows up.
Environment
SAP S/4HANA Cloud
Reproducing the Issue
1. Open app Create Production Order.
2. Enter quantity and scheduling information then click "Enter".
3. Go to the serial number page via "Menu -> Header -> Serial Numbers".
4. Manually enter a serial number for the product then click "Enter".
5. The error message shows up.
Cause
"**" is the number range assigned to the current equipment category and it is not external.
Resolution
Please set the number range as "external" in SSCUI 103091 - Define Number Ranges for Equipment Categories.
Keywords
serial number, production order, IS041, external range, equipment category, SSCUI 103091 , KBA , PP-SFC , Production Orders , PP-SFC-2CL , Production Orders (Public Cloud) , Problem