Villica,
The payment terms ID is simply used at the time of entering a transaction to have GP automatically calculate the due date. For example - if you've set up a vendor as Net 60, then enter an invoice for that vendor dated 8/1/08, GP will auto-calculate the due date as 9/30/08. After this the payment terms field is not used for anything and the due date is really what matters. That's why I was questioning whether it's the Payment Terms ID that you want to change.
I am assuming that you're either using the GP Select Checks functionality (Transactions > Purchasing > Select Checks) and selecting what to pay with a due date cutoff or you're printing a report with due dates and looking at it to determine what to pay. If that's not the case, please post back with more details.
Also, if you want to make a change after the transaction is posted, you can go to Transactions > Purchasing > Edit Transaction Information and change the due date there.
I am typically not a huge fan of changing transactional information directly in SQL, but for this specifically, I think you should be ok. Since GP does give us a way to do this directly in the interface.
Hope that helps. Please post back if you have more questions.
Victoria Yudin
Dynamics GP MVP 2005 - 2008
Flexible Solutions - home of GP Reports
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