Output type not trigerring Automatically for inbound delivery

Hi all

I created a custom output type for Delivery idoc processing ZOPO copy of OPOD and maintained all the settings also condition record for the same has been maintained.

But when we are creating inbound delivery (transaction VL31N) the output type ZOPO is not coming automatically.

In the Delivery document and in the Output screen i have checked  Determine analysis for output(VL32N -> Enter IBD No -> Select menu option Extras -> Delivery output -> Header

Go to menu option GoTo -> Determin.Analysis.)

It is showing me ->Message 502-Output ignored (requirement 017 not fulfilled).

The system allows me intromission manual the output type ZOPO in the screen Inbound delivery:Output.

Can please throw some light so that in output message determination the Output type should come automatically for Proof of delivery

Thanks and regards

Altomare