Well, when you update any field's permission to read-only for Marketo's sync user - Marketo can only read the data and cannot make any updates essentially.
The question / concern / situation is kind of reverse here if I'm not wrong - it's not that the updates from Marketo are causing any issues, it's rather the updates from SFDC clearing out the fields is kind of a situation of concern here. This usually happens when the fields in the Marketo have read-only access (i.e., no access / permission to edit the field(s)), and upon updating the data by Marketo's sync user as per updates in Marketo to SFDC, SFDC does not take the update but rather returns a NULL value which eventually wipes the data off in the Marketo too. Or, if the Marketo's sync user has the apt permissions to write the data than there may be the case where in the field values in the SFDC may have been wiped off at its end which would then eventually sync back to Marketo wiping off the data in the Marketo too.
... View more
Customize up to 8 badges at the top of your trophy case for all other Community members to see!
Establish
Earned on 2.08.21
Earned by 1806 people
Select to learn more
Boost 10
Earned on 2.08.21
Earned by 587 people
Select to learn more
Give Back 5
Earned on 2.08.21
Earned by 943 people
Select to learn more
Boost 5
Earned on 2.08.21
Earned by 998 people
Select to learn more
Give Back 3
Earned on 2.08.21
Earned by 1455 people
Select to learn more
Boost 3
Earned on 2.08.21
Earned by 1455 people
Select to learn more
Give Back 10
Earned on 2.08.21
Earned by 559 people
Select to learn more
Applaud 25
Earned on 2.08.21
Earned by 383 people
Select to learn more
.png)