With_item-withcd in method post of object FIPP

Hi all, 

I'm getting the error while post (method post) of objetc type FIPP. I created an parked document in transaction FV60 with 8 itens in withholding tax.

When I try to change the status of document using the method post(FIPP) the message is show. 

field with_item-withcd(8) does not exist in screen SAPLFWTD 0100. 

I try to meet the note in marktplace but I don´t get one. 

The component version is 6.0 and the Support Package is SAPKH60020. 

Thanks in advance!

Rodrigo