Solution : https://service.sap.com/sap/support/notes/908886 (SAP Service marketplace login required)
Key words :
source code corrections, create product groups, number range check, number range, product group, transaction mc84, material master, error message, terms mc84, prod reason
Related Notes :
| 931067 | MC84: MA 597 when using internal number range |
| 592229 | MC84: Create product group with generated material number |