he need:
Read and write two custom subform line-item fields on Quotes: Segment_wyceny (picklist/text) and W_pakiecie (number).
Write works; read does not return these fields via SDK.

Environment

• Zoho CRM Widget

• Zoho Embedded App SDK v1.2

• Module: Quotes

• Subform/line items: Product_Details

• Custom line-item fields: Segment_wyceny, W_pakiecie

• Test Quote ID: 751364000038706221

What works

• Creating Quotes with line items using insertRecord

• Updating line-item custom fields using updateRecord with line_item_custom_fields

await ZOHO.CRM.API.updateRecord({
  Entity: 'Quotes',
  APIData: {
    id: NEW_QUOTE_ID,
    Product_Details: [
      {
        id: LINE_ITEM_ID,
        line_item_custom_fields: [
          { api_name: 'Segment_wyceny', value: '...' },
          { api_name: 'W_pakiecie', value: 2 }
        ]
      }
    ]
  }
});

What doesn’t work (reading)

• getRecord does return Product_Details, but the returned line items do not include the custom fields

• No line_item_custom_fields array; fields like Segment_wyceny / W_pakiecie are missing

• Even when explicitly requested via fields

Attempts

1. Plain getRecord
ZOHO.CRM.API.getRecord

2. getRecord with fields on subform

   ZOHO.CRM.API.getRecord({
     Entity: 'Quotes',
     RecordID: '751364000038...
   })
   

3. getRecord with fields on main record (sanity check)

   ZOHO.CRM.API.getRecord({
     Entity: 'Quotes',
     RecordID: '751364000038706221',
     fields: 'Segment_wyceny,W_pakiecie'
   });
   

   Not applicable – these are line-item fields, not on the main record.

4. getRelatedRecords for Product_Details

   ZOHO.CRM.API.getRelatedRecords({
     Entity: 'Quotes',
     RecordID: '751364000038706221',
     RelatedList: 'Product_Details'
   });
   

   Fails with “relation name invalid” (Product_Details is a subform/line items, not a related list).

Notes

• Confirmed: ZOHO.CRM.WIZARD.Post is not an SDK method

• The full calculation snapshot is also stored in a JSON field on the Quote, but we do not want to use that as the data source

Expected vs Actual

• Expected: getRecord should include line_item_custom_fields for each Product_Details row, or at least return Segment_wyceny / W_pakiecie when requested via fields

• Actual: Product_Details are returned without custom line-item fields; line_item_custom_fields is undefined/missing

Question to the community
How to correctly retrieve custom line-item fields (Segment_wyceny, W_pakiecie) from Quotes → Product_Details using Zoho Embedded App SDK v1.2?

Is there a documented way to make getRecord return line_item_custom_fields for Quotes line items, or an alternative endpoint/parameter that should be used within widgets?