Font info missing

After the making of a PDF, at controlling this PDF with Enfocus Pitstop we are seeing in font Info (ctrl D-font tab) that the true type fonts are enclosed/subset. At the adobe type 1 fonts, there is no info. After processing in our ApogeeX system of Agfa it is good, but when we try to make a certified PDF there is an error that there are font that are not embedded. Do you know how this can be?
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