PPPI PI sheet to trigger HUM goods receipt and PI order confirmation

Question

Hi gurus,
We're running into a problem when setting up our PI sheets.
We're using Handling Unit Management for our finished products and would like to use the PI sheet to post both the goods receipt of handling units and the order confirmation. For now let's assume all activities and ingredients are backflushed.
For the HUM section we've created a function module that combines transactions COWBPACK and COWBHUWE. When called by itself it works like a dream.
For the order confirnation we've successfully used standard SAP message category PI13, but also only when called by itself.
The problem is when we combine them:
When combining the Z function module to contain both COCI_CONFIRM_ORDER (from the PI13 message) and our ZHUM function modules, it appears that the COCI_CONFIRM_ORDER blocks the process order so the COWBHUWE part of our function module cannot be executed. This has something to do with the way SAP handles the "commit" in the function module.
Now, I noticed it's possible to include more than one message category in customizing for the PI sheet category (when configuring through the wizard).  The idea is then to process the messages with a background job, filtering through the message category so we do the HUM part immediately and the confirmation only at the end of the shift so they don't block each other.
However, when I do this still only one message category is created after processing the PI sheet.
Do you know how to create messages with multiple message categories from the same PI sheet? Or if that's not the way, is there a better way to set up this process?
Sorry for the long text, just wanted to be precise.  Any help is, as usual, greatly appreciated.
Kind regards,
Elt

Answer 1

Hi
1. What is quantity of the waste material you get as by product? Do not you wan it to be handled as scrap? What is the %age of scrap you have defined in the BOM for the material? You wll have some data regarding this. Or else how do you arrive at decission that after subcontract processes the waste you are paying him, Is it umpsum basis or material quantity basis. The best way is to have a Subcontract PO, but for that even though you do not weigh the watse quanity you must be having so historical data for the waste quantity generated and the conversion of the sane to other SFG , definitely you can arrive that on a pro_rata basis. Have a Code for the waste mateial. Release Subcontract PO for SFG which is what you get back, and issue the components( waste) to subcontractor.
Please remember your PO intially will be for Provisional quantity if you are unable to reach a fixed quantity. Amend the PO before GR as per the actual quanity for which you wish to pay the vendor.
For the waste quanity stock updation you use 262(w/o refe to Prd order) after the FG is confirmed.
Material price updation happens cirrectly in this process.
2. You can pay the vendor as you wish by by this process but what about the price updation for the ordered material SFG. When you can receive by product in separate Txn againt FG then why can not you follow the proces no. 1?
3. I would not liketo suggest 3 rd option as that becomes much comlicated for a simple operation.
Best Regards