Define Business Transaction Variant

Dear All,

I post MIRO, an error message popup: "Item category 40100 is not listed here, this is not allowed item category within business transaction variant 0300/0001."

i go to t-code: GSP_VD  to add item category 40100, a message show up:

"Choose the key from the allowed namespace"

i enter then save it, but, system doesn't save it.

Please help to solve this issue.

Best Regards,

Rtn