Attributes in SCIM can be either single-valued or multi-valued and SCIM can support complex attributes where an attribute can be comprised of multiple single or multi-valued sub attributes, for example:

Simple Attribute (single-valued) An attribute that contains a single value 

{
  "displayName": "Archer, Meredith A"
}
Simple Attribute (multi-valued) An attribute that contains multiple values. Multiple values can include a "type" attribute to define the type of value specified (i.e. work vs home address). 

{ 
  "emails": [ 
    { 
      "type" : "other", 
      "value" : "marcher@pingdevelopers.com" 
    },
    { 
      "type": "work",
      "value" : "meredith.archer@pingdevelopers.com"
    }
  ] 
}
Complex Attribute An attribute that contains one or more simple attributes 

{ 
  "name": 
    { 
      "familyName": "Archer",
      "givenName": "Meredith",
      "displayName" : "Archer, Meredith A" 
    }
}
Sub-Attribute An attribute that is a member of a complex attribute. using the previous example, "familyName" is a sub-attribute of "name"