Where is the IDOC Sender field set?

Question

I have been asked to help solve an IDOC problem wherein a system is sending IDOCS with different values for the control record sender field.  I am a BASIS person, so I know quite a bit about the IDOC transmission process but not much about the creation of them.
The IDOCS cover the basic buy/sell scenarios:
purchasing: ORDERS, ORDRSP, DESADV, INVOIC
sales: ditto, but in the opposite direction.\
The complaint is that for a given business partner, different IDOC types have different sender IDs.  So the partners get DESADVs from sender BLERK and INVOICs from sender GURGLE.  The actual sender values used are not related to the client's Logical System name (for example, one of them is '0101' which indicates that a customizing person might have put junk data into a field they did not understand.)
I am trying to figure out how the sender is being set.  AFAIK there are no user exits and no IDOC rules in place.
IDOCs are sent from the ABAP system through a Business Connector, so I am interpreting the "Process Integration" topic of this forum in the broader sense, but I could not find a more appropriate forum.
There are various options for me to overwrite the sender - for example I can stomp it in the business connector, but I would rather fix the problem at the source and educate the monkeys that cause the problem in the process.
I have not been able to find anything in the partner profiles and output condition records for this.
Please tell me where the SENDER value can be set for any of the outbound logistics IDOCS.
Thanks,
Russ.

Answer 1

Hi Russell,
as you mentioned IDOC are getting triggered from ABAP.. that means,,
is your IDOC is Inbound IDOC or Outbound IDOC..?
if it is your Inbound IDOC then check for following details.
this is the problem of Partner profile.
check from which system you are getting this IDOC triggered.. if it is PI then check for related interface in PI and in interface you will be able to get this information that from where you are getting this Sender value how you are getting..and you can then change it accordingly in PI if PI is sending you that IDOC..
this is not necessary that IDOC will triggered from PI only as ABAP program can also triggered and create IDOC.. so in that case check which program or function module is generating that IDOC .. then in that you will get information before generating what values are getting passed to these control record.. so you can change it there...also..
if the IDOC is Outbound IDOC:
then in this your ABAP program is generating that IDOC and check for program or function from where this IDOC is getting generated and change the logic to fill control records ..
Thanks,
Bhupesh