Causes of Number Port-In Rejection (French number only)

When you request to port a phone number into Onoff Business, the request must comply with French telecom regulations (ARCEP) and with the validation processes of the operator currently hosting your number.

If the information submitted does not exactly match the losing operator’s records, the port-in request may be rejected.

This guide outlines the most common reasons for number port-in rejection in France and explains how to avoid them when porting a number to Onoff Business.

How Number Portability Works in France

To successfully port a number into Onoff Business, the following conditions must be met:

• The number must be active with your current operator
• A valid RIO code must be provided
• All account details must match exactly (company name, address, account reference, etc.)
• For business lines, the legally registered entity and required supporting documents must be correct
  

Onoff Business submits the port-in request on your behalf to the losing operator. If any detail does not match their records, the operator may reject the request.

Most Common Causes of Port-In Rejection

Below are the rejection reasons most frequently reported by French operators when porting numbers into Onoff Business..

Incorrect or Mismatched Account Information

For business accounts, all information must match exactly what is registered with the losing operator.

Common issues include:

• Legal company name does not match
• Incorrect or mismatched SIRET
• Address mismatch (billing or service address)
• Wrong customer reference or account number
• The number is registered under a different legal entity
  

How to avoid this:
Verify all details with your current operator before submitting the request. Checking your latest invoice is usually the most reliable way to confirm the correct information.

Invalid or Missing RIO Code

The RIO (Relevé d’Identité Opérateur) is mandatory in France for number portability.

A request may be rejected if:

• The RIO code is incorrect
• It does not correspond to the submitted number
• The RIO is outdated or has been regenerated multiple times
• The RIO is linked to a different contract or company
  

How to avoid this:
Retrieve the RIO again by calling 3179 from the line to be ported. For business lines, you may need to request it directly from your operator.

Number Not Active or Pending Deactivation

The losing operator will refuse portability if the line is not fully active.

Rejections occur when:

• The number is suspended or terminated
• A cancellation or termination is already scheduled
• Another port-out request is already in progress
  

How to avoid this:

Before submitting your request, confirm with your current operator that the line is active and not scheduled for termination. If needed, make sure the number is reactivated with your current operator.

Number Part of a Block or Range

Some operators allocate numbers in blocks or ranges (for example, groups of 10, 50, or 100 numbers).

In these cases, partial porting may be rejected, with messages such as:

• “Number part of a range – incomplete request”
• “Associated numbers must be ported together”
  

How to avoid this:

Ask your operator whether the number belongs to a block. In some situations, the entire block must be ported together.

Contractual or Administrative Restrictions

Although portability cannot be refused for unpaid bills, certain administrative situations can still block a port:

• The number is tied to an active long-term contract
• The account is under dispute or investigation
• The number is linked to a corporate fixed-line package requiring additional validation
  

How to avoid this:
Check with your operator that no contractual or administrative restriction applies to the number.

Best Practices for a Successful Port-In

To reduce the risk of rejection:

• Use exact company details from your latest invoice
• Double-check your RIO code
• Ensure the number is active and not pending cancellation
• Provide a correctly completed and signed mandate (LOA) for business lines (landline number only)
• Confirm whether the number belongs to a block or range (landline number only)
• Contact Onoff support if anything is unclear before submitting

What Happens If a Port-In Is Rejected

If your port-in request is rejected:

• The Onoff team will inform you of the official rejection reason provided by the losing operator
• You can correct the information or documentation
• The request can be resubmitted at any time
  

Our support team is available to help you verify the required details and guide you through the correction process to ensure a successful port-in.