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Bookkeeping review in InsERT Rewizor nexo: in order before the year end
Several years of discrepancies in a company's books reached the accounting office as a single list. Every item comes with evidence and the simplest fix.
Industry: Limited company, books kept by an accounting office Review of the books in Rewizor nexo Comparison with bank statements and JPK Discrepancy list for the office Fixes on a database copy
In short
- › Original database untouched, all work on a copy
- › Every item with a document, account and date
- › The copy from before the fixes stays, in case you need to go back
- › The accountant decides on every fix
About the project
A Polish limited company keeps its books in Rewizor nexo, at an external accounting office. For several years some errors carried over from one year to the next: counterparty balances, euro settlements, settlements with the shareholder.
The challenge
The office had no time to go through thousands of open items one by one, and without that the year could not be closed with confidence. Every fix in an accounting program also needs a document. A correction the accountant does not understand is a bigger problem than the error itself.
Goals
- Find discrepancies between the books, the bank and JPK
- Give evidence and the simplest fix for each
- Leave the original database alone
- Prepare the year end
Technical challenges
A program you cannot see inside
Rewizor nexo stores its data in an SQL database, and much of its logic cannot be inspected. So the agents only read the database and test every change on a copy first.
A fix has to look like the program made it
A new document is modelled on one nexo created itself, and its notes say where it came from. The accountant opens it in the program and sees an ordinary document.
Solution and implementation
An agent team like an office team
Some agents collect facts from the books and the bank, others assess them for VAT, corporate tax and law. An independent auditor checks the facts alone before seeing the proposed solution.

A list laid out the way the office asked
Past years and the current year apart, with a column for the simplest fix. Closed years stay closed, and a counterparty fixes its own error.
A package to check in nexo
The office gets a corrected copy of the database, a list of what to check after opening it, and draft documents to sign, such as balance confirmations. If anything does not match, it goes back to the copy from before the changes.
A new year without risk
The fiscal year is opened by the wizard in the program, and only the opening balance comes from the copy. Where nobody knows how the program does something, the program decides.
Results
The accountant decides instead of searching
Instead of going through thousands of entries, the office gets a list of items with evidence and a proposal.
A consistent database after the fixes
The database consistency check after the changes found no errors, and a comparison with the original showed only the intended changes.
Every entry shows where it came from
A document added by a script says so in its notes and keeps its real creation date.
Takeaways
Copy first
In an accounting program database I only do what one backup restore can undo.
Technologies
InsERT Rewizor nexo Microsoft SQL Server Python AI agent teamFrequently asked questions
Do the agents post entries instead of the accountant?No. They work on a copy of the database and prepare proposals with evidence. The office approves every change in Rewizor nexo.
What if a fix turns out to be wrong?The copy from before the fixes stays. The office restores it and is back where it started.
How does the office check the result?It restores the copy as a new database, opens the period in nexo and goes through the list: documents, trial balance, open items.
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