Hi,
When you create the article in MM41 after saving it are you able to view the created article number or you get an express message as terminated something like that.
Recheck the newly created article code in the tables. If it is not available check the "SM13" for locked entries in SAP system.
Kindly ask your BASIS team to look into this in Priority if it is your PRD system.
Kindly revert back .
Regards,
SRK