Send external IDs in the JavaScript part of the Pinterest tag

An external ID is a unique ID that you use to identify a single user. You can send external IDs alongside your conversions.

Input external_id into partnerdata, either on tag load or using set:

pintrk(“load”, “<YOUR_TAG_ID>”, {“external_id”: “<value>”});
pintrk(“track”, “<EVENT_TYPE_NAME>”);
pintrk(“set”, {“external_id”: “<value>”});
pintrk(“track”, “<EVENT_TYPE_NAME>”);

Replace YOUR_TAG_ID and VALUE with external IDs, featuring your specific information.