email script in email template

[Vedavalli]

When I'm trying to use my email script in email template
I'm getting 

Following variables are not valid or defined: ${mail_script:missing_fields_data}

Error Message

Invalid update

can I know the reason for this 

Thank you

[Vedavalli]

can you please share the screen shot what you're getting in the  mail body?

[Vedavalli]

can you please share the screenshot  what you're getting in the body?

[Shree_G]

@Vedavalli ,

Since the incident state in not "on hold", I am getting below email.

The script is correct. Re-check your configuration or share the screen shot of the notification you configured.

[Luiz Lucena]

I might be wrong, but you are using an email template, based on your screenshot, Unsubscribe and Prefeerences. 

When using email template, the subject and message comes from the template. 

And your mail_script is in the body of the message, which will not be used. 
Try to put your mail_script in a blank message OR create a new template and add your script to the template.

[Ankur Bawiskar]

@Vedavalli 

It worked for me. I hope your email script is not breaking somewhere, you need to debug that.

Share that email script and how are you invoking from email client template

Output: Native

Output: Workspace

Email Script

Email client template: invoking email script

If my response helped please mark it correct and close the thread so that it benefits future readers.