[ADD] accounting: restriction for re sequencing for FR

The re sequencing feature done by WAN is perturbing our french customer
In order to explain the reason the feature is, let's state what has been
decided by the product owner (TSB)

opw-2389435

accounting/fiscal_localizations/localizations/france.rst

@@ -59,11 +59,8 @@ In case of non-conformity, your company risks a fine of €7,500.
 
 To get the certification just follow the following steps:
 
-* Install the anti-fraud module fitting your Odoo environment from the 
-  *Apps* menu:
-
-  * if you use Odoo Point of Sale: *l10n_fr_pos_cert*: France - VAT Anti-Fraud Certification for Point of Sale (CGI 286 I-3 bis)
-  * in any other case: *l10n_fr_certification*: France - VAT Anti-Fraud Certification (CGI 286 I-3 bis)
+* If you use Odoo Point of Sale, install the anti-fraud module *l10n_fr_pos_cert*: France - VAT Anti-Fraud Certification for Point of Sale (CGI 286 I-3 bis) 
+  fitting your Odoo environment from the *Apps* menu.
 
 * Make sure a country is set on your company, otherwise your entries won’t be 
   encrypted for the inalterability check. To edit your company’s data, 
@@ -174,6 +171,18 @@ Odoo absolves itself of all and any responsibility in case of changes
 in the module’s functions caused by 3rd party applications not certified by Odoo.
 
 
+Re sequencing of the invoices
+-----------------------------
+
+It remains possible to re sequence the invoices but with some restrictions:
+
+1. The feature will not work when entries are previous to a lock date.
+2. The feature will not work if the sequence is inconsistent with the month of the entry.
+3. It will not work if the sequence leads to a duplicate.
+4. The order of the invoice will remain unchanged.
+5. It is useful for people who use a numbering from another software and who want to continue the current year without starting over from the beginning.
+
+
 More Information
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