Ian Grieve looks at one more way that deploying SSRS reports can go wrong in SSRS requires that you use local SQL Server relational databases… error
— Read on www.azurecurve.co.uk/2019/09/ssrs-requires-that-you-use-local-sql-server-relational-databases-error/
SSRS requires that you use local SQL Server relational databases… error – azurecurve
SQL & DataInstall, Upgrade & AdminReporting & BI
Archived post from 2019. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.