Sheet membrane for waterproofing/crack isolation

Below can be found the question I sent and the response received: We see wet-applied on site waterproofing sealers like Laticrete Hydro Ban on a regular bases and include them in the Paints & Coatings Low-Emitting Materials category. Would a sheet membrane waterproofing/crack isolation material be considered an underlayment that needs to be documented in the Low-Emitting Materials Flooring category since it is not wet-applied, or would it not be considered an underlayment? Underlayment is not included in the USGBC Glossary.
GBCI Response:
All products within the waterproofing membrane must be included in the credit documentation. As this product is part of the waterproofing membrane itself, it may be excluded.