Hi,PPMKAW
Based on the database version features, setting up transactional replication between different 2014 versions of SQL Server, as you mentioned, is feasible. However, feature limitations between different versions may affect log shipping, For example, the Data compression, Table and index partitioning that is only available in the Enterprise Edition.
You can refer to this Link for more information, and see the features of different versions in the Features Supported by the Editions of SQL Server 2014.
Best Regards,
Mikey Qiao
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