RE: Display UI

Use the below code to display download icon, using wherecontains pass the document Id inside document.

a!gridColumn(
label: "conventional",
value: a!richTextDisplayField(
value: a!richTextIcon(
icon: "download",
linkStyle: "STANDALONE",
link: a!documentDownloadLink(
document: 1
)
)
)
),

a!localVariables(
  local!crAppCollateral_cdt: rule!CR_APP_QE_getAppCollateralForDocGeneration(
    cif_int: ri!cif_int,
    collateralFlag_int: 0,
    requestId_int: ri!requestId_int
  ),
  local!crCustDoc_cdt: rule!CR_CUST_QE_getCustomerDocDataBasedOnFilters(
    cif_int: ri!cif_int,
    requestId_int: ri!requestId_int,
    sourceRowId_int: index(local!crAppCollateral_cdt, "id_int", "")
  ),
  local!download: index(
    local!crAppCollateral_cdt,
    wherecontains(
      index(local!crAppCollateral_cdt, "id_int", ""),
      index(
        local!crCustDoc_cdt,
        "sourceRowId_int",
        ""
      )
    )
  ),
  local!docid: a!forEach(
    items: local!crAppCollateral_cdt,
    expression: 
    index(
      local!crCustDoc_cdt,
      wherecontains(tointeger(index(fv!item,"id_int","")),tointeger(index(local!crCustDoc_cdt,"sourceRowId_int",{}))),
      "docId_int",
      ""
    ),


  ),
  a!gridField(
    labelPosition: "ABOVE",
    data: local!crAppCollateral_cdt,
    columns: {
      a!gridColumn(
        label: "Collateral Type",
        value: index(fv!row, "collateralDescription_txt")
      ),
      a!gridColumn(
        label: "Collateral Type Detail",
        value: index(fv!row, "collateralTypeDescription_txt")
      ),
      a!gridColumn(
        label: "conventional",
        value: a!linkField(
          label: if(
            isnull(index(fv!row, "docId_int", {})),
            "",
            document(
              documentId: tointeger(
                index(
                  local!crCustDoc_cdt,
                  wherecontains(
                    index(fv!row, "id_int", ""),
                    tointeger(
                      index(
                        local!crCustDoc_cdt,
                        "sourceRowId_int",
                        ""
                      )
                    )
                  ),
                  "docId_int",
                  ""
                ),

              ),
              property: "name"
            )
          ),
          links: a!documentDownloadLink(
            label: if(
              isnull(index(fv!row, "docId_int", {})),
              "",
              document(
                documentId: index(fv!row, "docId_int", {}),
                property: "name"
              )
            ),
            document: index(fv!row, "docId_int", {})
          )
        )
      ),
     
    }
  )
)

I am following this way to get lists of document from the crcustDoc_cdt and trying to map with crCollateral_cdt. But getting some errors. Could you please help me on this

"getting some errors" is not exactly helpful to understand what is going on!