Hello @Michal Mláka ,
Welcome to the Microsoft Q&A platform.
Only certain fields are parameterized by default. But you can set a template to customize them by forcing to override it at deployment time.
For more details, refer to Use custom parameters with the Resource Manager template.
You may checkout this article Fixing ADF Databricks Linked Service which addressing the same issue.
Hope this helps. Do let us know if you any further queries.
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