We have a source-agnostic case creation + scheduled callback use case where there is no Lead created.

When the source agnostic case is created via API, the payload can populate up to 10 phone numbers across case-level custom fields. The expected callback sequence is:

• The first phone number is the primary number available from the sender/customer profile.
• If the callback to this number is not answered, the system should retry using the second phone number stored in a case-level custom field.
• If the second number is also not answered, it should move to the third number, then fourth, fifth, sixth, etc.
• This should continue sequentially through the 10 available phone numbers until the call is answered successfully.
• Once any number answers the call, the retry sequence should stop.

The challenge is that these additional numbers are stored as case-level custom fields, and there is no Lead object involved in this flow.

Could you please advise on how we can configure the retry strategy in Sprinklr for this scenario?