The Administration Guide explicitly advises against this configuration, noting that LDS-backed Read/Write VTS-TSRs are not recommended.
An LDS-backed VTS can nonetheless be configured and started with TSRACCESS=RW, and the same RACF CONTROL-level access rules from the RF configuration apply. However, a critical operational limitation exists: VTS Manager is not designed to perform an alias switch when the VTS is not in RO or RF mode. Attempting such a switch will produce the following error:
ERROR: VTS not Read-Only or RF
In terms of data access behavior, TSRACCESS=RW operates as a true read-write VTS. Users holding RACF WRITE privileges may execute both fetch and update commands. Users holding only RACF READ privileges are restricted to fetch operations.