Add Microsoft Dynamics 365 Sales Enterprise access where users already have the qualifying Dynamics 365 base offer required for attach licensing. This subscription is an attach offer, meaning it supplements eligible base licensing rather than replacing the prerequisite base offer. It applies to organizations standardizing sales users on the Sales Enterprise service level while retaining their existing Dynamics 365 licensing foundation. The attach designation matters when validating user eligibility. Assign the required qualifying base offer before applying this Sales Enterprise attach subscription to the same user. It is not intended to establish the underlying Dynamics 365 entitlement on its own. Teams should validate the base license assigned to each intended user before selecting this offer. DE9E4FCE-5812-43AD-A6A3-2103CE8B49E7 identifies the Microsoft Dynamics 365 Sales Enterprise attach ordering option. Its distinguishing characteristic is the qualifying-base-offer requirement: it is for adding Sales Enterprise licensing in an existing Dynamics 365 environment, not for users without the required base entitlement. This distinction helps administrators select the attach option where the prerequisite license is already present.