Flow designer error : JSON string

[Averyy]

Hello,

I am working on a flow to be triggered when a supervisor approves the submission of a document from a new hire. 

I keep getting this JSON error

Any suggestions? (I am not the most exp dev at the moment)

[Averyy]

this is a record producer that the supervisor is being tasked to either approve or reject the document 

[Saurabh Gupta]

Hi @Averyy 
Can you confirm/tell the below points-

1. Flow is on what table?

2. payload field is available on that table?

3. From where this payload is coming?

[Averyy]

the flow is being triggered by the creation of HR lifecycle event case: in processing

yes, the payload field is on that table

[Saurabh Gupta]

Hi @Averyy 
Which type of field is "payload"?