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The software uses the measurements from the Single Channel Ink Limit chart to compute initial gamut statistics. It compares the results to historical data for each Usage Type, and computes a "PASS" or "Warning" answer. A pass indicates that initial data looks good for this media configuration, so it is recommended to continue. If a "Warning" is computed, it is recommended to take a few minutes to make sure you have selected the right components in this media configuration. see questions "Troubleshooting a Gamut WARNING message" section below. You can always choose to continue, no matter what the gamut results are.
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(2) poor paper white - the media/paper color measurement (CIE L*a*b*) is too far from the color measurement of the Target Profile. A color simulation cannot be accurate enough if the color of the paper is too far from your Target Profile.
(3) low gamut volume - the estimated Gamut Volume is too small compared to your Target Profile, with the selected usage.
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