Sales Update and Remark field in AR

Hello there,

Seek your advice if this configurable or not:

During sales update R42800, it brings sales order number into AR Ledger, both  in Sales Order Number field as well as remark field. I learnt in the past that there are some localisation package to have specific logic to deal with this remark field in AR F03B11 but can't recall / find where to set up what can be flowing into remark field in AR F03B11 because the sales order number is already available in AR F03B11.

Thanks in advance,

Jason