The elements you have selected for grouping contain dimensions or tags whose references are not all included in the selection being grouped and are not all included in a common model group. As a result, some of the selected elements have not been included in the new group.

public static FailureDefinitionId ReferencesOutsideGroupAreNotAllowed { get; }

Public Shared ReadOnly Property ReferencesOutsideGroupAreNotAllowed As FailureDefinitionId
	Get

public:
static property FailureDefinitionId^ ReferencesOutsideGroupAreNotAllowed {
	FailureDefinitionId^ get ();
}