http://www.iec.ch/TC57/CIM#CRR.cRRcategory
Property cim:CRR.cRRcategory

type
ObjectProperty
comment
CRR category represents 'PTP' for a point-to-point CRR, or 'NSR' for a Network Service Right . If CRR category is 'PTP', both Source ID and Sink ID fields are required. If CRR category is 'NSR' only one field, either Source ID or Sink ID, shall be not null and the other shall be null. However, the 'NSR' category will include at least three records
domain
cim:CRR
range
cim:CRRCategoryType
References

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