How to use customized NER tag in token classification

I am trying to use the token classification template to conduct NER but to use my personal taggings, i.e labling punctuation positions, product names, etc. I followed all the steps and in the seqeval session, it whos that “{personal_tags} seems not to be NE tag”. Precision, recall, accuracy, and f1 are all 1.0, which is abnormal. Would it be the problem of the way of my tagging or is it the issue of tagging names?