Symptom
Inline Copy creation displays the following error message when enabling the deduplication option:
Inline copy cannot be created with deduplication enabled, when the primary copy has multiplexing enabled
Cause
This error message will appear when you are creating inline copy with deduplication and the source copy has Multiplexing enabled.
Resolution
You cannot create Inline Copy with deduplication when Primary (or source) copy has Multiplexing enabled. This is because Data Multiplexing is not supported with the Deduplication.