Custom Fields on Quote or InsurancePolicy Not Populated After Calling InsQuoteService:createUpdateQuote or InsPolicyService:createUpdatePolicy

After creating a quote via InsQuoteService:createUpdateQuote or issuing a policy via InsPolicyService:createPolicyVersion , custom fields added to the Quote or InsurancePolicy objects remain blank even though values were passed in the service input JSON. The managed services only populate fields that are explicitly included in their configured Field Sets or the additionalFields parameter.

Vlocity Insurance services populate fields based on:

1. Standard mapped fields: Built-in fields the service always maps (Name, Status, Dates, etc.)
2. Field Set fields: Fields listed in configured Field Sets (e.g., Ins_CreateQuote, Ins_IssuePolicy, Ins_GetPolicyDetails)
3. additionalFields parameter: Fields explicitly passed in the additionalFields node of the service input