Creating a SFDC Task - "Related To" filed is empty

Chintandoshi25
Level 2

Creating a SFDC Task - "Related To" filed is empty

We created a task in Marketo to write back to Salesforce where a planner/owner is assigned a task but the field "Related to" as you can see in the screenshot below is empty.

 

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Here we want the user to flow in the "Related to" field so that the planner gets to know which user/lead is to be served.

Is there any way we can have 'related to' field populating with the corresponding user/lead through Marketo.