Link Between Business Object and Transaction

Question

<b>How is Business Object linked to transactions?</b>
For example, how is business object BUS2032 (Sales order) linked to transaction VA01 (Create sales order)?

Answer 1

Hi Ben,
I'm not sure that you link a business object and a transaction code explicitly. Normally in the business objects methods you have coded what transaction code should be called. Therefore if you use the methods of the business objects it then knows what transaction to call.
Conversely on the workflow side you will find that down in the depths of the coding for VA01 (as an example) it calls workflow function modules and raises events. When doing so it provides the business object id and key to the business object (i.e. the sales order number). Indirectly I guess the change documents that are raised for most things in SAP like sales documents are uniquely identified and therefore can also be translated to the business object key (e.g. sales documents will have their own change document type).
A brief example in my 4.6c system can be found in include LIEDPF4C in the form finsta_kontoauszug_buchen with a call to function SAP_WAPI_CREATE_EVENT. You see the the parameter "object_type" has a variable passed to it "objtype_finsta". If you drill back on objtype_finsta you see that is hardcoded to the value BUS4499.
I guess you could say the developer of the business object knows what transaction codes the business object should use and the developer of the code in the transaction code knows what business objects he should be raising events for if necessary.
Hope this helps.
Regards,
Michael