Solution : https://service.sap.com/sap/support/notes/592229 (SAP Service marketplace login required)
Summary :
When using Transaction MC84 to create product groups without specifying names, and utilizing internal number assignment with an activated user exit in the material master, an error occurs after the initial product group creation. Subsequent attempts to create a product group yield errors such as "The material is already maintained for this operation" or "The number xxxx is not provided for the material type PROD product group." The issue stems from Transaction MMZ1 within the user exit, and a program error is identified as the cause. The recommended resolution is to implement specific source code corrections to mitigate this error.
Key words :
material type prod product group, source code corrections, internal number assignment, prerequisites transaction mmz1, create product groups, -mentioned error message, material master, product group, product groups, error message
Related Notes :
| 1080124 | Product groups: Maintained master data not saved |
| 1032102 | MC86: Description of product group cannot be changed |
| 951304 | MC86/MC84: Change/Create product group without MMZ2/MMZ1 |
| 908886 | MC84: No number range check when you create product groups |
| 841358 | FAQ: Flexible Planning |
| 814673 | MC84: How to identify required fields (MG 144) |
| 639404 | MC84: Create product group with template |
| 631799 | MC84: Work scheduling view not created in MM02 |
| 628786 | MC84: Product group creation not possible |
| 621753 | MC84: Error message when creating product group |