I want to use FI line item substitution to change values in the BSEG line item for the vendor - posting key 31.
I have created a step with requirement
BKPF-BLART = 'RE' AND BSEG-BSCHL = '31'
The substitution is done in an exit. I need to be able to examine subsequent BSEG line items (posting key 40) to determine the value of the substitution.
The user exit executes for BSCHL = 31. The data for posting key 40 must be in memory somewhere. Can I gain acces to it and if so, how?