DocumentationExperience PlatformMigrate Target from at.js 2.x to Web SDK

Debug Target with the Platform Web SDK

Last update: Tue Apr 11 2023 00:00:00 GMT+0000 (Coordinated Universal Time)

CREATED FOR:

  • Intermediate
  • Experienced
  • Developer

Verifying Target activities and debugging Web SDK to troubleshoot implementation, content delivery, or audience qualification issues. This page of the migration guide explains the differences between debugging with at.js and Platform Web SDK.

The table below summarizes features and support for testing and debugging approaches.

Feature or tool
at.js support
Platform Web SDK support
Activity QA URLs
Yes
Yes
mboxDisable URL parameter
Yes
Refer to information below to disable Target functionality
mboxDebug URL parameter
Yes
Use alloy_debug parameter for similar debug information
mboxTrace URL parameter
Yes
Use the Experience Platform Debugger browser extension
Adobe Experience Platform Debugger extension
Yes
Yes
alloy_debug URL parameter
Not applicable
Yes
Adobe Experience Platform Assurance
Not applicable
Yes

Adobe Experience Platform Debugger browser extension

The Adobe Experience Platform Debugger extension for Chrome and Firefox examines your web pages and helps you validate your Adobe Experience Cloud implementations.

You can run Platform Debugger on any web page and the extension has access to public data. To access non-public data using the extension, such as Target trace information, you must authenticate to Experience Cloud via the Sign in link.

Obtain and install the Adobe Experience Platform Debugger

The Adobe Experience Platform Debugger can be installed in Google Chrome or Mozilla Firefox browsers. Follow the appropriate link below to install the extension on your preferred browser:

After you install the Chrome extension or Firefox add-on, an icon ( ) is added to the extension bar. Select this icon to open the extension.

Refer to the dedicated guide for more information about the Adobe Experience Platform Debugger extension and how to debug all Adobe web applications.

Preview Target activities with QA URLs

Both at.js and Platform Web SDK allow you to preview Target activities using Target QA URLs, and both implementation methods support the same QA features.

Target QA URLs working by instructing at.js or Platform Web SDK to write a specific cookie to your browser named at_qa_mode. This cookie is used to force qualification for a particular activity and experience.

CAUTION
Target QA mode functionality is supported by Platform Web SDK version 2.13.0 or above. Target QA mode is enabled based on the xdm.web.webPageDetails.URL value passed in the sendEvent call. Any modifications to this value such as lowercasing all characters may prevent Target QA mode from working properly.

Refer to the dedicated guide for more information about Target activity QA.

Debug Target implementation

The table below outlines the differences between at.js and Platform Web SDK debugging tactics:

at.js feature
Platform Web SDK equivalent
Mbox Disable - disable Target from fetching and rendering to check if the page is broken without Target interactions

Load page with URL parameter: mboxDisable=true
No direct equivalent. You can block all Platform Web SDK requests with your browser’s developer tools.
Mbox Debug - logs every at.js action in the browser’s console to help troubleshoot rendering issues

Load page with URL parameter: mboxDebug=true
Alloy Debug - logs detailed actions of the SDK, including but not limited to Target personalization actions.

Load page with URL parameter: alloy_debug=true

Or execute alloy("setDebug", { "enabled": true }); in your developer console
Target Trace - with an mbox trace token generated in the Target UI, a trace object with details that participated in the decisioning process is available under window.___target_trace object.

Load page with URL parameter: mboxTrace=window&authorization={TOKEN}
Use the Adobe Experience Platform debugger extension or Platform Assurance.
NOTE
All the at.js debugging features listed above are available with enhanced capabilities in Adobe Experience Platform Debugger.

Disable Target functionality

The Platform Web SDK does not currently have a feature to selectively suppress Target responses. However, it is possible to suppress the Platform Web SDK requests with your browser’s developer tools, various browser extensions, or third-party applications. For example, to block the Platform Web SDK with Google Chrome:

  1. Right click anywhere on the page and select Inspect
  2. Select the Network tab
  3. Filter by the string //ee// to view only Platform Web SDK calls
  4. Reload the page
  5. Right click one of the filtered network requests and select Block request domain
  6. Reload the page and notice that the network request is blocked
  7. When you are finished debugging, right click the blocked network request and select Unblock, or close the Developer Tools panel

View debug logging

Debug logging for at.js using the mboxDebug=true URL parameter shows detailed information about each Target request, response, and attempt to render the content to the page. Platform Web SDK has similar debug logging using the alloy_debug=true URL parameter.

Information Logged
at.js (mboxDebug=true)
Platform Web SDK (alloy_debug=true)
Logging prefix for filtering
AT:
[alloy]
Page Load request details
Yes
Yes
Mbox or scope request details
Yes
Yes
Request status
Yes
Yes
Response details
Yes
Yes
Rendering status
Success and errors
Errors only
Rendering details
Yes
Yes
NOTE
Debug logs for at.js and Platform Web SDK provide similar level of detail with the notable exception that Web SDK only notifies of rendering errors due to invalid selectors. The debug logging does not currently confirm that rendering was successful.

View Target traces

Target traces provide detailed information about activity qualifications and the visitor’s Target profile. Since Target traces contain information that is not publicly available, viewing them requires an authorization token or authenticating within the Adobe Experience Platform Debugger browser extension window.

Target trace method
at.js
Platform Web SDK
mboxTrace URL parameter
Yes
No
Adobe Experience Platform Debugger browser extension
Yes
Yes
Adobe Experience Platform Assurance
No
Yes

To view Platform Web SDK Target traces with the Adobe Experience Platform Debugger, do the following:

  1. Navigate to a page on your site that has Target implemented with Platform Web SDK
  2. Open the Adobe Experience Platform Debugger extension by selecting the icon ( ) in your browser navigation bar
  3. Select the Sign In link
  4. Authenticate using your Adobe Experience Cloud login
  5. Select the Logs tab on the left
  6. Select the Edge tab on the top
  7. Optionally give your debugging session a name and click the Connect button
  8. Reload the page and the log should populate with detailed information about the edge network interactions
  9. Focus on the log entries that start with “Target Traces” in the description and select View to see Target trace details

How to view Target traces with Adobe Experience Platform Debugger {modal="regular"}

After selecting View, an overlay will appear allowing you to see the following information related to the request:

  • Matched activities
  • Unmatched activities
  • Request details
  • Profile snapshot

Refer to the dedicated guide about debugging Target content delivery for more information about Target traces.

Troubleshoot with Assurance

Target trace information is viewable in both the Adobe Experience Platform Debugger browser extension and within the Assurance application (formerly known as Project Griffon). To view Target traces within Assurance, do the following:

  1. Open the Adobe Experience Platform Debugger browser extension and connect a remote debugging session as outlined above
  2. Select the link with your session name above the debugging log
  3. Platform Assurance loads and shows detailed logging for all Adobe applications configured in the data stream for your implementation
  4. Filter the log by adobe.target
  5. Select a log entry with the type com.adobe.target.trace
  6. Expand the details of the payload and view the information under context > targetTrace

How to view Target traces with Assurance {modal="regular"}

Examine network request and response

The request payload and response of the Platform Web SDK sendEvent calls differ from at.js. The outline below should help you understand the structure of the request and response while examining the network calls with your browser’s developer tools.

Content request payload

Target specific elements of the Platform Web SDK payload {modal="regular"}

  • Profile, entity, and other non-mbox parameters are passed in the events array under data.__adobe.target
  • Decision scopes are located in the events array under query.personalization.decisionScopes
  • XDM data which are mapped to mbox parameters downstream are located in the events array under xdm

Content response body

Target specific elements of the Platform Web SDK response body {modal="regular"}

  • The Platform Web SDK returns actions for all Adobe applications under the handle object
  • The personalization:decisions action signifies a response from Target or offer decisioning
  • Target propositions are presented as an array, each with a unique proposition ID prefixed with AT:
  • Decision scope and activity details are located within the propositions array
  • Offer details are located in the items array under data
  • Response tokens are located in the items array under meta

Proposition event payload

Target proposition event example {modal="regular"}

  • Target specific SDK events are either decisioning.propositionDisplay for an impression or decisioning.propositionInteract for an interaction, such as a click
  • The details of the proposition event are located in the events array under xdm._experience.decisioning
  • The proposition ID of the display or interaction event should match the proposition ID of the content returned from Target

Congratulations, you’ve reached the end of the tutorial! Good luck migrating your Adobe Target implementatoin to Web SDK!

NOTE
We are committed to helping you be successful with your Target migration from at.js to Web SDK. If you run into obstacles with your migration or feel like there is critical information missing in this guide, please let us know by posting in this Community discussion.
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