3061925 - dump database to a Vormetric Encrypted File System fails

dump database or dump transaction to an Vormetric Encrypted File System fails and throws following error:

May  4 21:29:30 2021: Backup Server: 2.23.1.1: Connection from Server SYB_CERC_ERS_TST on Host <hostname> with HostProcid 22216828.
May  4 21:29:30 2021: Backup Server: 2.23.1.1: Connection from Server SYB_CERC_ERS_TST on Host <hostname>  with HostProcid 22216828.
May  4 21:29:30 2021: Backup Server: 4.172.1.4: The value of 'allocated pages threshold' has been set to 100%.
May  4 21:29:30 2021: Backup Server: 4.30.2.3: Volume validation error: attempt to open /dev/<path>/dev/rsyb_data3_ers returned Permission denied.
May  4 21:29:30 2021: Backup Server: 4.27.2.1: Volume validation error: attempt to close /dev/<path> /dev/rsyb_data3_ers returned Bad file number.
May  4 21:29:30 2021: Backup Server: 4.27.2.1: Volume validation error: attempt to close /dev/<path> /dev/rsyb_log2_temp returned Bad file number.

• dataserver: Adaptive Server Enterprise/16.0 SP03 PL09/EBF 29244 SMP/P/powerpc/AIX 7.1.3.30/ase160sp03pl09x/3839/64-bit/FBO/Thu Jul  9 10:06:29 2020
• backupserver: ASE backupserver/16.0 SP03 PL09/EBF 29244/P/powerpc/AIX 7.1.3.30/ase160sp03pl09x/6534/64-bit/OPT/Thu Jul  9 08:03:02 2020
• AIX 7.1
• Vormetric Transparent Encryption

Vormetric, file encryption, data-at-rest, data at rest, Thales,   , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , Problem