This screen is intended to select the matching fields of the contacts in Oracle Marketing Cloud to the external database.
![](https://sp-ao.shortpixel.ai/client/to_auto,q_lossy,ret_img/https://embelassist.com/wp-content/uploads/2021/01/decision-mappings.png)
Steps:
- Select the source fields
- Click on the drop down next to the matching fields which will be used to match contacts.
- Select one or more fields. NOTE: Because the email address is the key field in Oracle Marketing Cloud (ie. Eloqua) it is the best key to leverage in matching