The required subdirectories are actlog, bin, data, log, buffer, sapnames, cofiles, olddata and tmp. Additional optional subdirectories are backupand serial.
For tp, the transport subdirectories must meet the following requirements:
In UNIX systems, the owner of all these subdirectories must be a <sapsid>adm user.
All these subdirectories must also have read and write authorizations for the owner and the group.
In Windows systems, the subdirectories must have read and write authorizations for users <SAPSID>ADM and SAPService<SAPSID> for each R/3 System that is part of the transport group.
In IBM i systems, the subdirectories and directory /usr/sap/trans must have the primary group R3GROUPor <SAPSID>GROUP.