What is user buffer?

Q. What is user buffer?

A. When a user logs on to the SAP R/3 System, a user buffer is built containing all authorizations for that user. Each user has their own individual user buffer. For example, if user Smith logs on to the system, his user buffer contains all authorizations of role USER_SMITH_ROLE. The user buffer can be displayed in transaction SU56.

A user would fail an authorization check if:

* The authorization object does not exist in the user buffer.
* The values checked by the application are not assigned to the authorization object in the user buffer.
* The user buffer contains too many entries and has overflowed. The number of entries in the user buffer can be controlled using the system profile parameter auth/number_in_userbuffer.