Conversion Error before assing po step, GRC Inbound

Hi,

After the step to "Check Authorization After NF-e Receipt" at NFE inbound process, I´m receiving an error message "An error occurred during assignment of the NF-e items" , when I display the message I received "Falha ao converter para unidade de medida PC no pedido PC, linha 00000308(J1B_NFE)".

This unit of measure "PC" from the vendor does not exist on table T006 and I´m using the BADI J_1BNFE_IN , Method "IF_J_1BNFE_IN~UNIT_CONVERSION" to convert the vendor unit "PC" to my unit of measure PEÇ.

The problem is that I didn´t chose the purchase order to try to assing PO, this erro is comming before I try to assign po. The .XML file doens´t have Xped and Xitem tag.

Can any one help me?