VS.IUB.RLFailInd and RLM.FailRLSetupIub.CfgUnsup meaning

VS.IUB.RLFailInd and RLM.FailRLSetupIub.CfgUnsup

What do the above kpis mean on Huawei?
For the second counter what does it entail "configuration unsurported "?

Some physical channels configuration is abnormal.
RNC setting, but nodeB may not support.
So through Iub, nodeB reply radio link setup fail.
You can open alarm or event at nodeB and check for more detail, or trace Iub interface.

VS.IUB.RLFailInd:Number of RL Failures on Iub Interface (cause : Hardware 0r Synchronization failure or unsupported configuration )

RLM.FailRLSetupIub.CfgUnsup:

Number of RLs Unsuccessfully Established on Iub Interface for Different Causes :Number of RLs unsuccessfully established on Iub Interface due to configuration unsupported (cause : Combining not supported, Requested Tx Diversity Mode not supported, Number of DL codes not supported, Number of UL codes not supported, UL SF not supported, DL SF not supported, Dedicated Transport Channel Type not supported, Downlink Shared Channel Type not supported, Uplink Shared Channel Type not supported, or CM not supported)

some physical channels configuration is abnormal.
RNC setting, but nodeB may not support. So through Iub, nodeB reply radio link setup fail.
you can open alarm or event at nodeB and check for more detail, or trace Iub interface.