Diagnosis
You have entered a main asset number which already exists. (If you areusing cross-company code number assignment, this asset number may bebeing used in another company code.)
Create additional sub-numbers using the transaction 'Createsub-number'.
Use the function 'Display sub-numbers' to obtain an overview of all thesub-numbers created.

System Response

Procedure
Enter a new main asset number or create a sub-number for this mainasset number.