Batch data communication is a popular old method to move legacy data to the SAP system. In BDC SAP uses a screen to update the data.
In BDC there are two types of data update methods. Call transaction and session method, here I will discuss BDC session transaction.
In the BDC method we have to record the screen with demo data through SHDB Tcode.
In session transaction 3 function module used:
BDC_OPEN_GROUP - Here we have to pass client, user, group, keep.
BDC_INSERT - Here we have to pass TCODE and bdcdata structure.
BDC_CLOSE_GROUP
In session transactions you can track errors / exceptions in SE37.
it_bdcdata will contain the structure of BDCDATA which has the following fields:
PROGRAM - It will hold the running program name.
DYNPRO - It will hold the screen number.
DYNBEGIN - It will hold the start screen number.
FNAM - It will hold a field name.
FVAL - It will hold field value.
This structure is used in Batch input.
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