Facebook Conversions API troubleshooting

below you'll find guidance on common issues or errors you may encounter while using the facebook conversions api app \#100 missing permission (100, oauth exception) this error can appear when the facebook module is loading data from your facebook or facebook business manager account you need to grant {{product name}} additional permissions in your facebook account to do it, follow the steps log in to your facebook account in the upper right corner, click your profile icon click settings & privacy > settings in the left sidebar, under the your activity and permissions section, click business integrations find the make app and click view and edit in the pop up window, select all the permissions and click save log in to your {{product name}} account in the left sidebar, click connections , and find the connection that you use for facebook conversions api for crm click reauthorize if prompted, reauthorize account and confirm access error validating access token this error indicates that your session in facebook or facebook business manager has expired, possibly due to a password change to resolve it, reauthorize the connection in {{product name}} log in to your {{product name}} account in the left sidebar, click connections , and find the connection that you use for facebook conversions api for crm click reauthorize if prompted, reauthorize account and confirm access