← All tracks
Track
Troubleshooting & QA
Why isn't my tag firing — and why is it firing twice? Diagnose tracking that breaks.
For anyone debugging a container that should work but doesn't.
By the end: You can reason about why tags don't fire or double-fire, fix tracking on single-page and async sites, and turn errors and performance into events so you know when tracking breaks.
0% complete
4 Modules15 LessonsBeginner → AdvancedProgress shared with your courses
- 1The Debugging MindsetPreview mode is not proof. Verify at every layer.Read→
- 2Tag Assistant Preview, In DepthTags, Variables, the dataLayer, and the message list.Read→
- 3Reading Requests In DevToolsThe Network tab is the source of truth for what was sent.Read→
- 4Console, Elements & ApplicationInspect the dataLayer, find selectors, check cookies.Read→
- 5Helper Tools & ExtensionsFaster debugging with the right add-ons.Read→
- 6A Field Guide To Common BugsThe handful of issues behind most broken setups.Read→
- 7A Pre-Publish QA ChecklistA repeatable routine before you hit Publish.Read→