Hi Jonathan, 
Thank you for your support. I need some information to develop relationships. 
I've two ProductSpecification like below: 
"specification product 13" which has Characteristic1, Characteristic2 & "specification product 15" which has Characteristic3, Characteristic4. 

"productSpecification":
{
"id": "13",
"@type": "ProductSpecification",
"href": "http://serverlocation:port/catalogManagement/productSpecification/13",
"name": "specification product 13"
},
“productSpecCharacteristic”:
[
	{
	“name”: “Characteristic1”,
	“valueType”: “string”,
	“productSpecCharacteristicValue”:
	[
		{
		“valueType”: “string”,
		“isDefault”: true,
		“value”: “value11”
		},
		{
		“valueType”: “string”,
		“isDefault”: false,
		“value”: “value12”
		}
	]
	},
	{
	“name”: “Characteristic2”,
	“valueType”: “string”,
	“productSpecCharacteristicValue”:
	[
		{
		“valueType”: “string”,
		“isDefault”: true,
		“value”: “value21”
		},
		{
		“valueType”: “string”,
		“isDefault”: false,
		“value”: “value22”
		}
	]
	}
]

"productSpecification":
{
"id": "15",
"href": "http://serverlocation:port/catalogManagement/productSpecification/15",
"name": "specification product 15"
},
“productSpecCharacteristic”:
[
	{
	“name”: “Characteristic3”,
	“valueType”: “string”,
	“productSpecCharacteristicValue”:
	[
		{
		“valueType”: “string”,
		“isDefault”: true,
		“value”: “value31”
		},
		{
		“valueType”: “string”,
		“isDefault”: false,
		“value”: “value32”
		}
	]
	},
	{
	“name”: “Characteristic4”,
	“valueType”: “string”,
	“productSpecCharacteristicValue”:
	[
		{
		“valueType”: “string”,
		“isDefault”: true,
		“value”: “value41”
		},
		{
		“valueType”: “string”,
		“isDefault”: false,
		“value”: “value42”
		}
	]
	}
]

We are trying to determine validations according to the relationships. 
1- Does "specification product 13" and "specification product 15" have to be in the same bundle, if I want to define a ProductSpecificationRelationship.
2- Or if I added a dependency relationship in to the ProductSpecificationRelationship, should I add that specification into the bundle?
3- Is the relationship between specifications necessary to define characteristic relationships?
5- Although there is no relationship between specifications, can the relationship between the characteristics of the specifications in the same bundle be established?
6- How relationships (Dependency, Migration, Substitution, Exclusivity) between specifications affect characteristics?
7- What does productSpecificationRelationship mean? Does it effect characteristic resultset? If it is, how productSpecificationRelationship type works? Is there any attribute like that?
Also if there is a document that tells about relationship, could you give us a link? We would like to research deeply.

If it possible, Can you give examples for each type of relationships (Dependency, Migration, Substitution, Exclusivity).

"productSpecificationRelationship":
[
	{
	"id": "15",
	"href": "http://serverlocation:port/catalogManagement/productSpecification/15",
	"type": "Dependency",
	"validFor":{"startDateTime": "2017-04-19T16:42:23.0Z"}
	}
]
OR
"productSpecificationRelationship":
[
	{
	"id": "15",
	"href": "http://serverlocation:port/catalogManagement/productSpecification/15",
	"type": "Migration",
	"validFor":{"startDateTime": "2017-04-19T16:42:23.0Z"}
	}
]
OR
"productSpecificationRelationship":
[
	{
	"id": "15",
	"href": "http://serverlocation:port/catalogManagement/productSpecification/15",
	"type": "Substitution",
	"validFor":{"startDateTime": "2017-04-19T16:42:23.0Z"}
	}
]
OR
"productSpecificationRelationship":
[
	{
	"id": "15",
	"href": "http://serverlocation:port/catalogManagement/productSpecification/15",
	"type": "Exclusivity",
	"validFor":{"startDateTime": "2017-04-19T16:42:23.0Z"}
	}
]