BAdI /SAPAPO/DM_PO_MNTN - CT_ORDKEY is not populated with the order data for PO Memo

Dear All,

I have done enhancement in the ERP system by adding the customer specific field ZZ_RESWK in structure CIFPUORCUS. This field is filled in the ERP user exit EXIT_SAPLMEAP_001, for the Purchase order (category BF & BG) and PO Memo (Category AH).

Now, in APO I have implemented the BAdI /sapapo/dm_po_mntn, and in the method "Change" I am passing the field zz_reswk to ct_ordkey table field reswk, so to write the field in livecache.

This set up is working for order category BF and BG. However, when I am transferring the PO memo (Category AH) from ERP to APO, the the BAdI internal table ct_ordkey is having no records. Hence I am not able to write field reswk for the PO memo in the live cache.

Any one have any idea, why there is not data in ct_ordkey for PO memo ?

Note: The data transfer from ERP to APO is using IDOC.

Please Help.

Regards,

SC