Update termination with BAPI_FIXEDASSET_CHANGE

Question

Hello,
We want to capture the serial number of an asset at the point of goods receipt. There does not appear to be any standard functionality to do this so I am making use of a BAdI in transaction MIGO. But I am encountering a problem with BAPI_FIXEDASSET_CHANGE.
The full scenario is as follows:
1. The user creates an asset in SAP.
2. They then generate a purchase order and specify account assignment of A for the PO item in order to assign the PO item to the relevant asset
3. At the point of goods receipt, the user uses transaction MIGO to receive against the PO. The user is prompted for a serial number for each item received.
The above steps are all standard but there is nothing in SAP to link the serial number entered in MIGO to the serial number of the asset. So I am making use of BAdI MB_DOCUMENT_BADI. I have implemented some code in method MB_DOCUMENT_UPDATE. This BAdI is called in the update task at the point that the material document is posted by MIGO. My code determines what serial numbers have been entered by the user and tries to update them on the asset master.
The problem is that BAPI_FIXEDASSET_CHANGE contains some code that does a CALL SCREEN and this fails because the code is run in the update task.
The following call stack is where the failure occurs:
Line 22 of include LAISTF20 (FORM MUSSFELDER_NEU) is CALL SCREEN GD_DYN-MAST.
Line 31 of include LAISTF7P (FORM update_stamm)
Line 112 of include LAISTF3B (FORM screen_performing)
Line 69 of include LAISTF39 (FORM asset_change)
Line 149 of function module ASSET_MASTERRECORD_MAINTENANCE
Line 172 of function module BAPI_FIXEDASSET_CHANGE
I believe this is an error with the BAPI and I'll raise this as a customer message separately but in the meantime, has anyone seen this problem with this BAPI before or alternatively does anyone know how to get around a BAPI that does a CALL SCREEN in the update task even though the statement doesn't produce a proper screen?
For info, this is SAP ECC 6.0 at SAPKH60010.
Thanks in advance,
Ben
Edited by: Ben Hallinan on Feb 13, 2008 4:53 PM

Answer 1

I tried using :
wa_poitem-po_item    = 000001.
wa_poitem-calctype   = 'A'.
APPEND wa_poitem TO t_poitem.
CLEAR wa_poitem.
wa_poitemx-po_item   = 000001.
wa_poitemx-po_itemx  = 'U'.
wa_poitemx-calctype   = 'X'.
APPEND wa_poitemx TO t_poitemx.
CLEAR wa_poitemx.
But it didn't work.
Thanks.