I am working on a flow taking info from Zoho Forms to Zoho CRM. The field is Course of Interest. In CRM this field is type multi-select in CRM (There are a dozen courses to choose from and the user can select any number from the pre-defined list).

The user filling in the form may be exieting on the system or not. So I don't want to use the upsert function in Zoho Forms / Zoho CRM intergration because I don't want to override the existing information if they are intersted in multiple courses.

I tried to add a feature in Zoho Flow where flow takes the existing entry into the field (from a fetch module command), and puts a comma with the data captured in Forms.

This is the error I get for a record with 2x existing items selected and 2x selected in the form

Zoho CRM says "Invalid input for Course_of_Interest. The expected input type is jsonarray."