Hi everyone,
I’m working on a Google Sheets + Apps Script automation workflow and I’m currently stuck debugging the data population layer.
The goal is to create a mostly buttonless workflow where multiple tabs automatically sync imported spreadsheet data and run comparison logic across sheets.
Current state:
- Installable onEdit triggers fire correctly
- External spreadsheet data imports successfully into staging tabs
- Execution logs complete successfully
- Debug toast notifications confirm the workflow runs end-to-end
- No runtime errors appear
However, the final dashboard sheet does not auto-populate from the imported data even though the staging/import sheets contain the correct data.
The issue appears related to:
- dynamic header mapping
- transformation logic between staging sheets and dashboard ranges
- or silent failures during the write phase
I’ve already verified:
- permissions/access
- trigger setup
- source spreadsheet access
- imported data availability
- basic header detection logic
Architecture overview:
- Users paste spreadsheet links into cells
- Apps Script imports source data into staging tabs
- Another layer maps/transforms the imported data into a dashboard comparison sheet
- Comparison logic then highlights differences across tabs
What I’d appreciate help with:
1. Best practices for debugging silent Apps Script failures
2. Reliable approaches for dynamic column/header mapping
3. Recommended architecture for scalable multi-tab synchronization workflows
4. Any known issues with setValues loops or trigger timing in this type of workflow
Thanks in advance.