Hi Vytas
Thanks for reaching out to Microsoft Q&A forum support.
Based on your description, you're experiencing issues with SharePoint List Forms conditional branching not working across two tenants. As far as I know, Microsoft has confirmed the general availability of the List Forms conditional branching feature earlier this year, as shown in the image below. This feature is supported in standard multi-tenant environments as well as other deployment scenarios.
Therefore, in your case, from my perspective, the issue may be caused by one or more of the following reasons:
- Tenant configuration
Different tenants might have varying settings or updates applied. If the feature isn’t activated in one or both tenants, branching logic won't function. Check with your tenant administrator to confirm if the feature is enabled.
Check the Microsoft 365 Admin Center (Settings > Org settings > Services or Health > Message center) or ask your tenant administrator to confirm the feature is enabled.
- Form configuration
The branching logic might not be correctly set up, such as using display names instead of internal column names in the formulas, or the form might be defaulting to a single-page view that bypasses dynamic rendering. This could cause conditionally branched questions to be hidden or ignored entirely.
So, you can recheck to verify internal names in List settings > Columns (via URL’s Field= parameter), set correct formulas in Edit columns, and test with New. Ensure dynamic rendering by recreating the form if needed.
Therefore, to ensure we fully understand the context and address the issue accurately, in addition to trying the two troubleshooting approaches mentioned earlier, you can also provide us with the following information if the problem still persists:
- Screenshots or details of the branching formulas you’ve configured (e.g., the exact syntax used).
- Any error messages or logs from the form editor or browser console when testing.
I am looking forward to hearing from you