question Re: Getting error "Cannot read property "length" from undefined" in flow designe in ServiceNow AI Platform forum

Getting error "Cannot read property "length" from undefined" in flow designer.

mit2324 — Tue, 20 Sep 2022 15:30:51 GMT

Hi all,

I am trying for SNow - JIRA integration using JIRA spoke. Getting error "Cannot read property "length" from undefined". I haven't used length anywhere in the script. Below is the script I have used in subflow, which is getting me the payload. The same script is running in background script, but getting error when I test run the flow.

try{

var issue_type = fd_data.subflow_inputs.template.u_issue_type.toString();

var payload_template = gs.getProperty('jira.'+ issue_type);

var json_val = JSON.parse(payload_template);

var payload = {};

if(json_val !=''){

for(var key in json_val)

{

payload[key] = fd_data.subflow_inputs.task[json_val[key]].getDisplayValue().toString();

gs.info("Jira_pload: "+ payload);

} }

return JSON.stringify(payload);

}

catch (e)

{

return e;

}

Please let me know what could be done to fix the issue. Thanks in advance,

Regards,

Mithun

Re: Getting error "Cannot read property "length" from undefined" in flow designer.

Sagar Pagar — Tue, 20 Sep 2022 15:45:37 GMT

Hi,

Take a look at - Error "Cannot read property length from undefined" in my custom workflow activity 'Create PDL'., whenever catalog item goes through the workflow.

Thanks,

Sagar Pagar

Re: Getting error "Cannot read property "length" from undefined" in flow designer.

Richard Hine — Thu, 22 Sep 2022 11:46:28 GMT

Mithun,

At a guess, your issue lies in your for loop. I would debug inside the loop what the json_val[key] is and ensure that it exists in the variable you are expecting to retrieve it from.

Hope this helps,

Richard

Re: Getting error "Cannot read property "length" from undefined" in flow designer.

Mathieu Lepoutr — Fri, 23 Sep 2022 04:14:27 GMT

Hi mit

I'm working as a pre-sales engineer with Exalate.

Exalate was designed with exactly these types of use-cases in mind, you could say that it is our "bread and butter".

One of Exalate's features, apart from syncing tickets bi-directionally, is having access to a script connection type, where the sky is truly the limit and your use-case will be solved by.

Any entity type will out-of-the-box be fully bi-directionally syncronized, which means, if a field gets updated on either side, it will automatically update on the other side, you can change this to make it uni-directional if you so please.

Exalate is easy and straightforward to set-up and you can control exactly which data you want to send and/or receive.

If you would like to see a customized demo of the product, please book a slot.

Cheers

Re: Getting error "Cannot read property "length" from undefined" in flow designe

mit2324 — Thu, 13 Oct 2022 08:04:18 GMT

The issue was with the payload value I was trying to send to JIRA, the issue type value (Example Story, Epic etc.,) which Jira expected was not sent in the payload. Also, it's case sensitive.