Overview
When you change your account number length in DATEV (e.g. from 4 to 6 digits) at the start of a new fiscal year, you may run into export issues unless the system can adjust accordingly. Moss automatically handles this transition for you.
This guide explains how Moss adjusts account numbers during export — so you can continue working across accounting periods without manual updates.
When this applies
You’ve updated the account length in your DATEV environment:
For example, account 6600 becomes 6600 00 in the new fiscal year.
When exporting to the new period, the old format doesn’t work.
When exporting to the old period, the new format doesn’t work.
Moss handles this automatically.
How Moss solves the issue
When you export to DATEV:
Moss detects the account length used in the selected accounting period.
Account numbers are automatically increased or shortened to match what DATEV expects.
This applies to all relevant account types, including supplier accounts, FX fee accounts, and prepayment accounts.
Moss ensures your export always matches the required format, even if your account structure changed.
Examples
Accounting Period | Moss Account | Exported to DATEV as |
2023 (4 digits) | 6600 00 | 6600 |
2024 (6 digits) | 6600 | 6600 00 |
If you updated your account length to 6 digits, Moss will export 4-digit accounts as 6-digit (e.g. 6600 → 6600 00).
If you export to a period with 4-digit accounts, Moss will shorten 6-digit accounts accordingly (e.g. 6600 00→ 6600).
Do I need to set this up?
No. Moss detects and applies this logic automatically based on the fiscal year and account configuration.
You don’t need to change anything in your Moss settings.
FAQ
Q: Do I need to configure anything?
A: No setup required. Moss applies the adjustment automatically.
Q: What if some of my accounts were not updated to the new length?
A: Only accounts from periods with a different format are adjusted. If the format already matches, Moss leaves it unchanged.
Q: Does this affect my actual accounting data?
A: No. The change only applies during the export to DATEV. Your Moss data remains unchanged.
Q: What if an account changed completely (e.g. 1234 → 654321)?
A: This is treated as a new account. Please update it manually in Moss.
Q: Will this be visible in the audit trail?
A: Yes, changes are logged in the audit trail for full transparency.
Q: Does this also apply to supplier and fee accounts?
A: Yes. Moss applies the same adjustment logic to all relevant account types.