Certified OmniStudio Developer

The correct merge code syntax for referencing a field in OmniScript is to use a dollar sign ($) followed by the merge code. The JSON data provided shows that 'Customer' is an array with the ID located at index 0. Therefore, the correct merge code to display the ID should be '$Details:Customer|0:ID$'. This correctly references the first element of the Customer array and the ID field.

The OmniScript element that allows a developer to retrieve data from many fields in a Salesforce record is the DataRaptor Extract Action. This element is designed to retrieve data from Salesforce, allowing the specification of objects and fields to be pulled into the OmniScript. This makes it suitable for retrieving extensive data efficiently from Salesforce records.

The issue lies in the configuration of the Type Ahead Block. For the fields to display the fetched data, the option 'Use Data JSON' needs to be selected in the properties of the Type Ahead Block. This setting allows the fetched data to be populated in the specified fields. Without selecting 'Use Data JSON', the fetched data will not be transferred to the fields FirstName, LastName, and BirthDate, thus failing to display the information even if the data is fetched correctly by the DataRaptor.

There are two potential errors that could cause an OmniScript to display no data from an API using an Integration Procedure. First, the API URL might not be allowlisted in Salesforce, which would block any communication with the API. Second, if the JSON sent from the Integration Procedure Action does not match any of the Original Input for the Integration Procedure, the data retrieval process would fail, resulting in no data being displayed.

The appropriate action to take is to use a DataRaptor Transform to convert JSON to XML. DataRaptor Transforms are specifically designed to transform data from one format to another, including JSON to XML. This makes it straightforward to convert the response of a REST API call into the required XML structure before sending it as an input to another external web service.