data protector Aborting connection to BSM. Abort code -1.

Data protector backup gets error:

Major] From: OB2BAR_VEPA_BAR@hostnamepath  "/Dom-PRINCIPAL"  Time: 11/13/2015 5:29:39 PM
    Aborting connection to BSM. Abort code -1.

And virtual machines are not bakuped

[Critical] From: VEPALIB_VMWARE@hostnamepath "/PEEQ-PRINCIPAL"  Time: 11/13/2015 5:29:39 PM
    Backup of object failed.
        Name: hostnameVM (Vmachine20141228)
        Path: /Dom-PRINCIPAL/PQo/dds/hostnameVM (Vmachine20141228)
        InstanceUUID: 4131233 c-31234124-45143433

We looked for information on internet but that is not enough.

Please help us.