We inform you about an internal technical adjustment at Mercado Pago that may require modifications to your system.

From now on, the user ID fields, which were previously of type Int32, have changed to the Int64 format. This means, in practice, that these fields can accommodate numbers of up to 20 digits.

If your application uses this information through fields such as 'user_id', 'payer_id', 'collector_id', or any other reference to user IDs provided by Mercado Pago, please consider making the necessary adaptations to avoid potential errors in your integration. For this, we recommend the following actions:

1. Review storage: Ensure that your system is prepared to store IDs in the Int64 format in a compatible manner.

2. Validate data retrieval: Check if the data retrieval processes are not converting or limiting the IDs to Int32 format, which could cause failures.

We recommend that the necessary adaptations be made as a priority to avoid interruptions or operational issues. If you need support or more information, we are available to help.