Within the user interface of Advanced Threat Protection (ATP) 3.2.0, or Symantec Endpoint Detection and Response (SEDR) 4.0, while adding a new whitelist or blacklist entry, a dialog box with a policy limit warning appears.
ATP 3.2 or SEDR 4.0 creates a new dialog box containing the warning "Policy limit reached :: Maximum policy count 15000 :: Remaining record count: -31924"
ATP 3.2 and SEDR 4.0 contain a hardcoded limit of 15,000 whitelist or blacklist policies.
Please upgrade to SEDR 4.1, where Symantec raises this limit from 15,000 whitelist or blacklist policies to 65,000 whitelist or blacklist policies.