Strange error when check a project

Experts:

When I check a project , I get error: Message from function module /TMWFLOW/CHECK_PRJ_CONS: No export system for PRD-010.

1) SDN has some threads about this error. But none of them fits my case.

2) OSS has 2 notes(e.g.1017929) with the correction contained in SAPKITL421 and so on, but my SM has much higher level than SAPKITL421.

Would you please share your experience on this trouble-shooting?

I appreciate.