This document offers a theoretical-practical guide that, applying the framework of ISO 19100 standards, allows the assessment of absolute positional accuracy to be carried out in a correct, reliable and oriented way to improve the metaquality of results and processes. In addition, a report template is proposed that summarizes the characteristics of the evaluation carried out, as well as the results obtained. The guide focuses on the calculation processes to be carried out in the cabinet, but also offers guidelines for the data collection processes in the field survey. The guide offers considerations on four positional accuracy assessment standards as these are options with very different and complementary perspectives.