Systems and methods for facilitating authentication for an entity system to use a partner system using pooled identifiers

A method comprising:

• storing, at a platform system that uses platform authentication data established by the platform system with a third-party partner system to authenticate the platform system to the third-party partner system for performing an operation, a pool of authentication identifiers comprising a third-party identifier set having authentication identifiers pre-allocated by the third-party partner system for use by the platform system;
• linking, based on an indication regarding whether an entity system is registered for use of the third-party partner system, a third-party authentication identifier of the third-party identifier set with the entity system;
• and
• processing the operation using the third-party authentication identifier linked by the platform system with the entity system.

One or more non-transitory computer-readable media storing instructions that, when executed by one or more processors of a platform system, cause operations comprising:

• storing authentication identifiers for use by the platform system with a third-party partner system;
• linking, based on whether an entity system is registered for use of the third-party partner system, a third-party authentication identifier with the entity system;
• and
• processing the operation using the third-party authentication identifier linked by the platform system with the entity system.