Diagnosis
Function module SMOE_GROUP_ADD has been called with parameterI_GENERATE_NO_KEY equals 'T'. In this case, the calling function modulehas to deliver GUIDs in table IO_GROUP field SMOHGROUP, because therecords can only be stored in the database if the key fields areunique.

Procedure
Call the function module with I_GENERATE_NO_KEY = 'F'. The functionmodule will then create the GUID automatically.
If you do not want the GUID to be generated automatically, fill the keyfield SMOHGROUP in IO_GROUP in the calling function module.