Thanks for the answer, Yuvaraj.
In brief, We have to create a contract using a document type (EVART) 'LPA'.
But this kind of document type cannot be created using this BAPI (BAPI_SAG_CREATE). It will return error : "Scheduling agreements with time-independent conditions are not supported".
The FM IDOC_INPUT_BLAORD doesn't have the structures to the informartion (HEADER, ITEM, SCHEDULE...). We need to fill IDOC_CONTRL and T_IDOC_DATA ?
I saw in form fill_appl_structures there is a user-exit (EXIT_SAPLEINN_001). We need implement this exit to fill ekko structure like an model?
And after the form blaord_fill_batch_input_table fill the T_BDC_DATA, We can impement the exit EXIT_SAPLEINN_003 to make some changes in BDC?
Do you have some example to use the FM IDOC_INPUT_BLAORD?
Thanks for taking time and addressing my question.