# MD for: https://www.mercadopago.com.ar/developers/es/docs/mp-delivery/store-management/change-store-external-id.md

\# Change external store ID There is also the possibility to create an external ID (\`external\_id\`) for a certain store. This field is optional, but can be used as an identifier for the order management software system. To enter the value of an external ID in a store, perform a PUT sending the \`store\_id\` and \`access\_token\` (generated by the OAuth authentication process) to the endpoint \[/proximity-integration/stores/{StoreID}/ external\_id\](https://www.mercadopago.com.ar/developers/en/reference/mp\_delivery/\_proximity-integration\_stores\_StoreID\_external\_id/put). See \[Security\](https://www.mercadopago.com.ar/developers/en/guides/additional-content/security/oauth/introduction) for more information about OAuth. > NOTE > > Important > > You will also be able to consult the information of a store through its external ID. For that, just send as request parameters the \`user\_id\` related to the store, the \`external\_id\` and the \`access\_token\`. Check more information in the API \[Get store by external ID\](https://www.mercadopago.com.ar/developers/en/reference/mp\_delivery/\_proximity-integration\_users\_SellerID\_stores\_external\_id\_ExternalID/get).