1) You can't

2) You can't

This is weird. How can the PO be corrected?

1st this was not explicitly changed and 2nd we do not get an opportunity to change? 

Pay attention when you receive, the Completed flag turns itself on automatically.

Sorry..but that doesn't answer my question on how the PO needs to be corrected?

Also, errors do happen and there should be a way of correcting. This is a dead-end

Yes, it's a dead end.  Do another PO, it's not correctable.

just go back into the PO and add the lines back in.  it's totally correctable.  you don't need a whole new PO.  No, you can't change a line that is marked as complete, but you can insert new lines so that you are still utilizing the same PO number.

We made an alert so that we can tell if anyone accidently cancels a remaining QTY upon a receipt so that we can check it if was supposed to happen or if a mistake.  We add lines back in all the time

Does that increase the overall PO value which actually is not the case in reality to the vendor? my system is reflecting an incorrect amount

not really, because if you compare whatever the original PO value was versus the total of whatever the receipts total too, then you will end up with the same value.  Vendors don't care about your PO on your end, only what you requested in the first place.  Someone screwed up on your side, the vendor doesn't see that.  at the end of the day, you are just trying to reflect that you still have a portion outstanding still.  

not really, because if you compare whatever the original PO value was versus the total of whatever the receipts total too, then you will end up with the same value.  Vendors don't care about your PO on your end, only what you requested in the first place.  Someone screwed up on your side, the vendor doesn't see that.  at the end of the day, you are just trying to reflect that you still have a portion outstanding still.  

Thank you Mike. Appreciate your patience. But suggest Sage introduce a change to turn-off auto complete. i don't see any use with it and users can manually close it.

Don't hold your breath for a change, it's been this way for 20 years.

i know what to expect from Sage...i see that they don't have a forum to take feedback too

I have to disagree.  it's completing the line because someone has entered a qty into the receipt that is making the line think it's done.

watch you next receipt.  whatever your qty is, type it in.  the QTY OUTSTANDING will now say 0 and the line will say YES to "completes line"

Now try to reduce that qty, it will let you reduce it but will not move the qty back to OUTSTANDING.  IT's totally functional and not broken, it's just something to be aware of.

NOW.. if you do notice you made an error, you have a change to fix it BEFORE you post the receipt.  you can manually hit the space bar on the YES on the COMPLETES LINE box to convert back to NO, and then manually add in the outstanding QTY.  totally fixable if caught before hitting post on the receipt.

OR, just disable the RECEIVE ALL and you will end all your problems.  I guarantee it.

https://www5.v1ideas.com/TheSageGroupplc/Sage300ERP/