Device category &1 already has group material number &3

Message type: E = Error

Message class: EG - IS-U device management

Message number: 120

Message text: Device category &1 already has group material number &3



What causes this issue?

Serialization material &V1& for device category &V2& already has
serialization number (group material number) &V3&.


System Response

Processing cannot be continued.


How to fix this error?

Ensure that your entry is correct. If you wish to allocate device
category &V2& to the same serialization group as device category &V1&,
enter serialization material &V3&.

Error message extract from SAP system. Copyright SAP SE.