---
title: "Rules to know & limitations"
slug: "règles-à-connaître-limites"
description: "Understand key rules for invoice periods, flow markers, and currency handling to ensure accurate transaction and payment data management."
updated: 2026-08-18T09:21:51Z
published: 2026-08-18T09:21:51Z
canonical: "help.frisbii.com/règles-à-connaître-limites"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.frisbii.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Rules to know & limitations

![](https://cdn.document360.io/b84e1b5d-2ba6-4465-8c62-fb45a2f31314/Images/Documentation/image-P4CEKRSP.png?sv=2026-02-06&spr=https&st=2026-10-28T03%3A09%3A35Z&se=2026-10-28T04%3A09%3A35Z&sr=c&sp=r&sig=rWVxbbnOecsB1ThyxNkYSzELaBJ1BKpA6ihNt8iECHg%3D)

## Rules to know

- A Deposit always corresponds to **a full period**, never to a single invoice.
- Flows 10.1 and 10.3 always share the same file and the same period; flows 10.2 and 10.4 form a separate file.
- The date that assigns an invoice to a period is the **invoice date** (flows 10.1/10.3) or the **payment date** (flows 10.2/10.4) — never the date the report is generated.
- Generation for the current period (Flow or batch) and corrections correctly filter by Company: two entities with the same scheme, and therefore the same calculated period, never mix their invoices. Only manual generation for an explicit period applies across all entities — only use it if a single Company has invoices for the targeted period.
- The transmission ID always carries a flow marker (`TXN` for transaction data, `PAY` for payment data), ensuring that Transaction data and Payment data for the same period never share the same identifier.
- An entity configured with the VAT chargeable event **on invoicing** never generates flows 10.2/10.4, regardless of its payments — this is not a bug.

## Known limitations

> **"All or nothing" correction**
> 
> A correction always regenerates the entire period — there is no fix targeted at a single invoice.

> **Foreign currencies (B2C)**
> 
> For flow 10.3, the actual currency of each invoice is displayed, but VAT amounts are not converted to euros for transactions in a foreign currency. This has no impact as long as your invoicing remains exclusively in euros.