Hi Rashi,
How system will post single entry for posting key 25, if you have multiple account assignment? Suppose if a invoice has credit posting for profit centre A & B and at the time of payment these profit centres has debited and two profit centre balances is clear. As you said, earlier it is creating a single entry? Then how the profit centres balances get cleared?
System always create multiple entries for vendor line items if they have multiple account assignments.
Regards,
Mukthar