Apr  1 16:58:28 xen8 xapi: [ info|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|dispatcher] spawning a new thread to handle the current task (trackid=94fee431020baebfc5ad2526a6b0308d)
Apr  1 16:58:28 xen8 xapi: [debug|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|audit] VM.migrate_send: VM = '73820231-5269-9571-2986-46876a633d66 (CentOS8)'
Apr  1 16:58:28 xen8 xapi: [debug|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|dummytaskhelper] task VM.assert_can_migrate D:50e1d3df519b created (trackid=94fee431020baebfc5ad2526a6b0308d) by task R:114dbd241e1d
Apr  1 16:58:28 xen8 xapi: [debug|xen8|12992701 |VM.assert_can_migrate D:50e1d3df519b|audit] VM.assert_can_migrate: VM = '73820231-5269-9571-2986-46876a633d66 (CentOS8)'
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|backtrace] VM.assert_can_migrate D:50e1d3df519b failed with exception Server_error(LICENCE_RESTRICTION, [ Storage_motion ])
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|backtrace] Raised Server_error(LICENCE_RESTRICTION, [ Storage_motion ])
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|backtrace] 1/9 xapi @ xen8 Raised at file ocaml/xapi/pool_features.ml, line 40
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|backtrace] 2/9 xapi @ xen8 Called from file ocaml/xapi/xapi_vm_migrate.ml, line 154
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|backtrace] 3/9 xapi @ xen8 Called from file ocaml/xapi/xapi_vm_migrate.ml, line 1168
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|backtrace] 4/9 xapi @ xen8 Called from file ocaml/xapi/message_forwarding.ml, line 1688
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|backtrace] 5/9 xapi @ xen8 Called from file ocaml/xapi/server_helpers.ml, line 80
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|backtrace] 6/9 xapi @ xen8 Called from file ocaml/xapi/server_helpers.ml, line 99
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|backtrace] 7/9 xapi @ xen8 Called from file lib/xapi-stdext-pervasives/pervasiveext.ml, line 24
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|backtrace] 8/9 xapi @ xen8 Called from file hashtbl.ml, line 194
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|backtrace] 9/9 xapi @ xen8 Called from file lib/debug.ml, line 92
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|backtrace]
Apr  1 16:58:28 xen8 xapi: [debug|xen8|12992701 |Async.VM.migrate_send R:114dbd241e1d|rbac_audit] cannot marshall arguments for the action VM.migrate_send: name and value list lengths don't match. 
str_names=[session_id,vm,dest,live,vdi_map,vif_map,options,vgpu_map,],
 xml_values=[S(OpaqueRef:be87d7d0-f84c-4801-9522-689864a0b148),
 S(OpaqueRef:acb02705-8156-45ac-bf48-3b796275520b),
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 ||backtrace] Async.VM.migrate_send R:114dbd241e1d failed with exception Server_error(LICENCE_RESTRICTION, [ Storage_motion ])
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 ||backtrace] Raised Server_error(LICENCE_RESTRICTION, [ Storage_motion ])
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 ||backtrace] 1/1 xapi @ xen8 Raised at file (Thread 12992701 has no backtrace table. Was with_backtraces called?, line 0
Apr  1 16:58:28 xen8 xapi: [error|xen8|12992701 ||backtrace]