Transport request showing Repair for changes to OBU1.

Hi frieds,

I changed a document type assignment to a T code in OBU1.At the time of saving it is automatically generated with work bench request and in request tree it showing Repair, after releasing also it is showing Repair.

I dont understand why it is showing

Object can only be created in SAP package and Repair in request, is i am doing any wrong, please help me.

Thanks,

Srini.