Headers are ignored for Pinpoint CreateEmailTemplateCommand and UpdateEmailTemplateCommand

[Sin-]

Checkboxes for prior research

• I've gone through Developer Guide and API reference
• I've checked AWS Forums and StackOverflow.
• I've searched for previous similar issues and didn't find any solution.

Describe the bug

I wrote a script that is going to create 250 email templates in Pinpoint.
Here is the input for the CreateEmailTemplateCommand that returns a "200 - Created" :

const input = {
        EmailTemplateRequest: {
          HtmlPart: '<p>Lorem Ipsum</p>',
          Subject: templateName,
          Headers: [
            {
              Name: 'List-Unsubscribe',
              Value:
                '<mailto:*****@***.***>,<https://**********/pinpoint/unsubscribe/{{Address}}>',
            },
            {
              Name: 'List-Unsubscribe-Post',
              Value: 'List-Unsubscribe=One-Click',
            },
          ],
        },
        TemplateName: templateName,
      };      

But when I go check in the console, everything is good with the templates, except they have no headers set.
I also tried to add them with an UpdateEmailTemplateCommand, with no success.

Am I missing something?

Regression Issue

• Select this option if this issue appears to be a regression.

SDK version number

@aws-sdk/client-pinpoint@3.540.0

Which JavaScript Runtime is this issue in?

Node.js

Details of the browser/Node.js/ReactNative version

Node v20.17.0

Reproduction Steps

import { PinpointClient, CreateEmailTemplateCommand } from "@aws-sdk/client-pinpoint"; // ES Modules import
const client = new PinpointClient(config);
const input = {
        EmailTemplateRequest: {
          HtmlPart: '<p>Lorem Ipsum</p>',
          Subject: 'templateName',
          Headers: [
            {
              Name: 'List-Unsubscribe',
              Value:
                '<mailto:*****@***.***>,<https://*******.***/pinpoint/unsubscribe/{{Address}}>',
            },
            {
              Name: 'List-Unsubscribe-Post',
              Value: 'List-Unsubscribe=One-Click',
            },
          ],
        },
        TemplateName: 'templateName',
      };      
const command = new CreateEmailTemplateCommand(input);
const response = await client.send(command);

Observed Behavior

CreateEmailTemplate command worked and returned the Created message, but the Headers part of the query was ignored and no headers were set

Expected Behavior

Headers to be taken into account and set on the template

Possible Solution

No response

Additional Information/Context

No response

[aBurmeseDev]

Hi @Sin- thanks for reaching out.

I tried your code on my end and the headers were correctly set and visible in the AWS Console. I suggest upgrading to the latest version and attempting again to see if that resolves the issue.

Additionally, you mentioned a script that creates 250 templates. Could you confirm if the headers are also missing when creating a single template? This might help narrow down the root cause of the problem.

I wrote a script that is going to create 250 email templates in Pinpoint.

Best,
John

[Sin-]

Issue resolved ith the latest version!
Thanks for your help!

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