Duplication of document numbers for Credit Memo, Inventory Transfer, etc.
We have noticed that there are credit memo numbers, inventory transfer numbers etc. that were duplicated in two different transaction in two different dates. Can you give a theory or possible reasons why this one happened? Let's refer to the credit memo first. I have searched these two credit memo in the database and I only found 1 of them... I used their names, details, codes and other info to locate the other CM but I failed.
A/R CREDIT MEMO NUMBER follows a pattern of (COMPANY NAME)-(CREDIT MEMO NUMBER)-(BRANCH)
I have created a credit memo last April 12, 2011 with the document number (ABCD-20050002-MNL) generated by the system.
with one item (BLUE TILE) and addressed to John Scott.
We found out that another credit memo dated April 29, 2011 having the same document number (ABCD-20050002-MNL) making it a duplicate of the first one. This second transaction has one item also (BLACK PAINT) and was addressed to Olivia Dunham.
We found this when they are already printed or in hard copies. I just want to ask for your opinions, theory or suggestion with regard to this situation. Is there a possibility where it was duplicated while in the printing process?
Looking forward to hear from you....