Multiple ISA's in a single file while batching outbounds

Question

Hi,
Here is a peculiar scenario.
We have few customers which send PO through a third-party TP. Though we get these files from a third-party vendor, the orders will still contain the acutal customer sender id's. So we have configured a single Trading partner setup in B2B for this third-party vendor and before we feed the file to B2B, we are flipping the sender id(TEMP_TP) in ISA segments, so that B2B can identify and process the file.
While sending the outbounds back to B2B, we are over-riding the ISA SenderId value using Internal properties from BPEL from the common TEMP_TP to actual customer sender ids. This is to avoid the development of external pos-processing logic to re-flip the TP to individual customer names.
We have also enabled time-based batching for this trading partner. However when B2B batches the outbound file, it creates MULTIPLE ISAs for each sender id and writes all of them in a single file.
I understand that there have to be multiple ISAs if there are more than one Sender id, but my problem is i don't want to have multiple ISAs in the single file. Is there any setting to be done for each of these ISAs to be created in different file. I would like to have only one ISA in a file though the batching is enabled.
Please suggest
Thanks,
Phani

Answer 1

Eng,
Thanks for your response.
When we send each ST/SE segment to B2B from BPEL, we are overriding the ISASenderId property by setting a value in Internalproperties.
This value will not be same if the order belongs to different customers. So when such orders(ST/SE) with different Over-ridden sender Ids are being batched in B2B(they will be sent to a single TP) , it creates a single file with multiple ISA segments, by batching all the ST/SE belonging to one senderid in each ISA.
Regards,
Phani