file upload without Form submission?

/*If I pass the integration call in onSuccess part & submit:True for the button -> File uploaded in Appian & Integration not called*/
buttons: {
  a!buttonWidget(
    label: "Button",
    style: "NORMAL",
    saveInto: {
      a!submitUploadedFiles(
        onSuccess: {
          a!save(local!submissionSuccessful, true),
          a!save(
            local!responseData,
            rule!File_Upload_Check(doc: local!file, doc_Type: "Test_Dummy").result.body.success
          )
        },
        onError: {
          a!save(local!submissionSuccessful, false),
          a!save(local!errorCode, fv!error)
        }
      )
    },
    submit: true,
    validationGroup: "Test"
  )
}

/*If I pass the integration call in onSuccess part & submit: True has been commented for the button -> File not uploaded & Appian Integration not called at all*/
buttons: {
  a!buttonWidget(
    label: "Button",
    style: "NORMAL",
    saveInto: {
      a!submitUploadedFiles(
        onSuccess: {
          a!save(local!submissionSuccessful, true),
          a!save(
            local!responseData,
            rule!File_Upload_Check(doc: local!file, doc_Type: "Test_Dummy").result.body.success
          )
        },
        onError: {
          a!save(local!submissionSuccessful, false),
          a!save(local!errorCode, fv!error)
        }
      )
    },
    /*submit: true,*/
    validationGroup: "Test"
  )
}

/*If I pass the integration call in as 2nd saveinto part next to a!submitUploadedFiles function & submit:True for the button -> File not uploaded & Appian Integration not called*/
buttons: {
  a!buttonWidget(
    label: "Button",
    style: "NORMAL",
    saveInto: {
      a!submitUploadedFiles(
        onSuccess: {
          a!save(local!submissionSuccessful, true)
        },
        onError: {
          a!save(local!submissionSuccessful, false),
          a!save(local!errorCode, fv!error)
        }
      ),
      a!save(
        local!responseData,
        rule!File_Upload_Check(doc: local!file, doc_Type: "Test_Dummy").result.body.success
      )
    },
    submit: true,
    validationGroup: "Test"
  )
}

Hi Mike - Thanks for your suggestion. Please find the code & let me know your thoughts

i was more hoping you'd edit your original comment, but this works too i guess

So i've recreated something similar in my CE site, and I can't get the form (When viewed as a portal) to call the integration correctly at all - I just get a generic message, "The system has encountered an Error".  This is even when trying to call the integration on a tiny document I pre-loaded into my filesystem and reference via a constant.  The same thing works fine when I try it from the Interface Designer.

Hi Mike - Thanks for your response. I made some changes and first button with "Submit: true" will save the doc in Appian & I used 2nd button to call the process model in which I configured the integration as smart service which worked

That's a good idea.  Did you happen to try putting both of those functions in the same button?  I'm curious whether it'll work at this point.  I expect *something* along these lines should.

@sharathp0003
in Appian 23.3 appian introduce a!submitUploadedFiles() function in this function you can use in save into parametar for the upload file without form submission