The identifier for Merchant Center Account.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/resources/product_link_invitation.proto)

| Fields ||
|---|---|
| ## `merchant_center_id` | `int64` Output only. The Merchant Center id of the Merchant account. This field is read only |