Hey there!

You may refer to the sample photo attached below. I've tested and it works well.

By using the Form Data Hash Variable without mentioning a record ID, this hash variable expects a process context to be able to implicitly obtain a record id as a reference to lookup for its specified column.

Hence, for your solution, trying appending a record ID in your Form Data Hash Variable. You can learn more here: Hash Variable#FormDataHashVariable

Hope this helps!

Also, don't forgot to perform JSON API Authentication when consuming Joget JSON APIs. You can learn about it here: https://dev.joget.org/community/display/KBv6/JSON+API+Authentication

But I am using external rest api for this tool. Can use the same json payload for external rest api?

Yes. Can.

You give the hard code for Activity ID, are they any ways to get activity id or form ID by using hash variable? as you can see, I use this hash variable { "CoID":"#form.mtn_uom.CoID[{form.mtn_uom.id}]#", "UomCode":"#form.mtn_uom.UomCode[{form.mtn_uom.id}]#", "UomStatus":"#form.mtn_uom.UomStatus[{form.mtn_uom.id}]#" }

Yes actually! Try this : https://dev.joget.org/community/display/KBv6/Hash+Variable#HashVariable-WorkflowAssignmentHashVariable

I already try using form data hash variable, form binder and workflow, but still not able to work. I got this error in my server log everytime I run the process

{
	"ValidationResults": [ 
	{
		"Success": false,
		"Message": "Company ID value is required and cannot be empty",
		"MemberNames": [
			"CoID"]
	},
	{
		"Success": false,
		"Message": "UOM ID value is required and cannot be empty",
		"MemberNames": [
		    "UomCode"
		]
	}
	],
	"Status": 400,
	"Result": "",
	"ResultObject": null
}

Hey there, Looking at the hash variables you appended in the comments above, the nested hash variables also does not seem to have access to any process context. Is this form being used and tested by running a process? or tested with a form menu/CRUD menu?

The form used by running process

I already find the solution by using the workflow variable as nested hash variable. Tq for your effort, I really appreciate it.