Hi, I’ve read these posts dealing with WIX DB atomicity/ transaction/ record locking. https://www.wix.com/velo/forum/coding-with-velo/atomicity-when-updating-a-field-in-collection https://www.wix.com/velo/forum/coding-with-velo/avoid-duplicates-in-database-in-case-of-concurrent-data-inserts https…

There are 2 solutions, but I will give you the most reliable one. You put a unique index on invoice number, write it, catch a possible DUPS error, if so, raise number by increment (like 1), write to db again, until no more DUPS error.

Collection (not record) locking

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CODE-NINJA January 7, 2024, 10:03pm 5

Did not see you for a long time, old friend!

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Collection (not record) locking

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