Function IST (Interstore Transfers) is a very basic function for transferring merchandise. It is only available on the legacy Eagle system. It is not available from Epicor Eagle for Windows. A few facts about IST:
IST does not create an audit trail.
IST only updates the QOH field in the shipping and receiving store.
IST does not update Accounts Receivable.
It is recommended that you use the Transfers application and not Function IST.
Do not use both IST and the Transfers application for a specific transfer. A transfer begun with IST must be completed in IST. A transfer started in the Transfer application must be completed with the Transfer application.
For more information about Function IST, refer to the Transfers User's Manual, chapter 3.