These are optional features supported by GeneralDiagnosticsCluster.
MatterSpecification.v13.Core § 11.12.4
DataModelTest (DMTEST)
This feature indicates support for extended Data Model testing commands, which are required in some situations.
This feature shall be supported if the MaxPathsPerInvoke attribute of the Basic Information Cluster has a value > 1.
MatterSpecification.v13.Core § 11.12.4.1
These are optional features supported by GeneralDiagnosticsCluster.
See
MatterSpecification.v13.Core § 11.12.4