gorfc API to fetch the Line Type for custom RFC

[aashakabra]

Hello,

I am working on a custom RFC (Z_TEST_COMPLEX_TT_EXP) whose definition is available in the attached document.
For I_SIMPLE interface, on clicking on TYPE MAND_TYPE, second screenshot from the document displays the Line Type details. It also shows MANDT name for the Line Type.

Now, I am trying to fetch the metadata for Z_TEST_COMPLEX_TT_EXP using GetFunctionDescription method.
funcDesc, _ := conn.GetFunctionDescription(rfcName)

But I do not see any struct field that holds information MANDT. Can you please highlight how can I fetch the same by either using same API or different API?

Using JCO library, I am able to get above information using metaData.getRecordTypeName(i) where metaData is of Type com.sap.conn.jco.JCoRecordMetaData

I am doing a POC to change the existing code from using JCO library to gorfc and wanted to understand how I can take care of above usecase with gorfc.

Attaching the RFC definition for reference.
RFCDefinition.docx