Using match function inside a recordlink

I am trying to open record summary for requests but whatever record I open I'm getting record doesn't exist. I attached my code I can understand something is wrong but couldn't get what I was missing.  The ri! Request relation is of type request relation. Anyone can help?

a!sectionLayout(
  contents: a!forEach(
    items: ri!RequestRelation,
    expression: a!cardLayout(
      contents: {
        a!linkField(
          links: a!recordLink(
            label: "link",
            recordType: 
              a!match(
                value: index(
                  a!queryRecordByIdentifier(
                    recordType: 'recordType! Request',
                    identifier: tointeger(fv!item[requestRelation.field.AppId])
                  ),
                  'recordType! Request.fields.applicationId',
                  {}
                ),
                equals: 212,
                then: 'recordType!ABC',
                equals: 213,
                then: 'recordType!ARC',
                default: null
              ),
            identifier: a!match(
              value: index(
                a!queryRecordByIdentifier(
                  recordType: 'recordType! Request',
                  identifier: tointeger(fv!item[requestRelation.field.AppId])
                ),
                'recordType! Request.fields.applicationId',
                {}
              ),
              equals: 212,
              then: 'recordType! Request.relationships.ABC.fields.requestId',
              equals: 213,
              then: 'recordType! Request.relationships.ARC.fields.requestId',
              default: null
            )
          )
        )
      }
    )
  )
)