Some specs call it 'invalidated', others call it 'deactivated'. If the
user is unfamiliar with this, the error message about "invalidated"
might not be obvious enough; let's also mention 'deactivated' in the
message and explicitly mention that it needs to be activated before use.
Change-Id: I91488b0e7dc25a8970022b09e575485a4165eefa
cd18ed0a82