Authorizations
When client-independent tables are maintained, the global authorization object "Maintenance of client-independent tables" (S_TABU_CLI) is checked to see whether authorization for maintaining client-independent tables is granted.
The authorization object "Table maintenance" (S_TABU_DIS) controls whether a user may maintain or display the data in a particular table or view. This authorization is controlled via the authorization group which is specified when the table or view maintenance modules are generated.
You can find further information on this topic in the system administration documentation, section "Authorizations", "Table and view maintenance".
Even if authorization exists, a field can only be maintained if the field is also defined as maintainable in the Dictionary.