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 Public Edition
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-2CL , Production Orders (Public Cloud) , Problem