1. Drag the Account activity onto the Journey Builder canvas.
2. Click Configure.
3. Using the Create or Update option, follow steps 1–3 at Account. Journey Builder attempts to retrieve the Sales and Service Cloud Account ID of the Account record. It then uses the mapper under Account Management to look up the field if it is not found in the Marketing Cloud.
4. Select an option to designate what happens if more than one account match is found. Multiple matches can occur when the external ID used on the Account record is not unique.
5. Select Assignment Rules if the journey should observe the active assignment rule.
6. Click Next.