By default, the partner receives an invoice for every ad account at the end of the month. To consolidate invoices, you can create an invoice group and add ad accounts into the group up to 3 days before the invoice is sent.
curl -i -X POST \ -d "emails=[<EMAIL_ADDRESSES>]" \ -d "name=<GROUP_NAME>" \ -d "access_token=<access token sanitized>" \ "https://graph.facebook.com/<API_VERSION>/<EXTENDED_CREDIT_ID>/extended_credit_invoice_groups"
Change the name or email associated with an invoice group.
curl -i -X POST \ -d "emails=[<EMAIL_ADDRESSES>]" \ -d "name=<GROUP_NAME>" \ -d "access_token=<access token sanitized>" \ "https://graph.facebook.com/<API_VERSION>/<INVOICE_GROUP_ID>"
curl -i -X POST \ -d "ad_account_id=<AD_ACCOUNT_ID>" \ -d "access_token=<access token sanitized>" \ "https://graph.facebook.com/<API_VERSION>/<INVOICE_GROUP_ID>/ad_accounts"
curl -i -X DELETE \ -d "ad_account_id=<AD_ACCOUNT_ID>" \ -d "access_token=<access token sanitized>" \ "https://graph.facebook.com/<API_VERSION>/<INVOICE_GROUP_ID>/ad_accounts"
curl -i -X GET \ "https://graph.facebook.com/<API_VERSION>/<AD_ACCOUNT_ID>?fields=extended_credit_invoice_group&access_token=<access token sanitized>"
curl -i -X DELETE \ -d "access_token=<access token sanitized>" \ "https://graph.facebook.com/<API_VERSION>/<INVOICE_GROUP_ID