I think the solution to my inquiry is to have a clear definition of what the CMDB Relationship Types are:
Documentation is missing quite a bit of explanations: Relationship types - BMC Asset Management 9.1
19.02 includes this feature
Changes to the BMC CMDB 19.02 Common Data Model
Added location attributes on relationships
New attributes have been added to location relationships to allow specific and detailed information to be stored for locations. For example, for Location CI called 'Datacentre Denver', a CI related to 'Datacentre Denver' can have attributes for elements such as floor, row, rack, shelf that are defined as part of the relationship.
Class Attribute Description Type Required? Hidden? Default Value BMC_ElementLocation Floor Floor where CI is Located Char (256) N N Null BMC_ElementLocation Room Room where CI is Located Char (256) N N Null BMC_ElementLocation Rack Rack where CI is located Char (256) N N Null BMC_ElementLocation Shelf Shelf where CI is Located Char (256) N N Null
BMC recommends that two relationship CIs should not be created between two same end point CIs with different location information. Having more than one active relationship for location could lead to difficulty in knowing the correct location of the CI.