So, every time I fire-up the CDI, the instrument display reads; 'Battery Shop'

So, I went to an Interstate battery outlet, and here's what their scanner read on the 48mo. old battery:

BATTERY RESULTS
VOLTAGE: 12.68U
MEASURED: 1056 CA
RATED: 850 CA

What might be going on with positive readings like this, and the instrument panel reads; 'Battery Shop'?

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'06 E320 CDI
'17 Corvette Stingray Vert