Duplicate check numbers

AI generated answer (using internal Slack threads):

In NetSuite, it is indeed possible for two users to generate checks with the same check number if they are both using the "Print Checks and Forms" screen at the same time. This is because the system assigns the next available check number to the user when they access the screen, and does not update until a check is actually printed. If two users access the screen at the same time, they will both be assigned the same next available check number. To prevent this from happening, you could implement a process where only one user is allowed to print checks at a time. This could be communicated between users with a simple message such as "I'm doing a check run" and "I'm done with check run". This would ensure that the check numbers are always unique and sequential. In the case where check numbers have increased dramatically, it is likely that someone manually entered a higher number in the check number field and saved it. NetSuite then continues the sequence from this new number. To correct this, you would need to manually adjust the check numbers or use a CSV import to correct the sequence. It is also recommended to use a prefix like "ACH" or "EP" for confirmation/transaction numbers for ACH payments to avoid disrupting the auto numbering. ****** Disclaimer: This response was generated by an artificial intelligence assistant based on previous conversations from multiple Slack channels, and may contain inaccuracies or mistakes. ******