diff --git a/docs/wholesale/api/v3.md b/docs/wholesale/api/v3.md
index af46ba1..ec899c2 100644
--- a/docs/wholesale/api/v3.md
+++ b/docs/wholesale/api/v3.md
@@ -2946,10 +2946,13 @@ Each port will be one of the following types, if unsure please contact the LCP b
 The above is provided for guidance only, the Number Portability Guide should be consulted to determine lead times for porting requests.
 
 #### Number Object
-The ‘numbers' array in the above should be an array of objects each with the following structure. These must include all numbers, including the MBN (even though it is specified separately)
+The ‘numbers' array in the above should be an array of objects each with the following structure. These must include all numbers, including the MBN (even though it is specified separately).
+
+Where a Multi/MultiLine port is submitted and the associated numbers are a specific range, rather than individual numbers, a RangeId must be specified against all of the numbers in the range, any additional associated numbers that are not part of the range, should have the value "Null". A RangeId parameter is not required if there is not an associated range. 
 
 |Parameter|Values||
 |:-|-|-|
+|**rangeId**|Null <br/>1 <br/>2 |
 |**number**|01xxxxxxxxx <br/>02xxxxxxxxx |Number in UK National format |
 |**type**| mbn |Main Billing Number (must only be one of this type) 
 ||associated| Associated Number (e.g. another DDI on an ISDN circuit)|
@@ -3052,14 +3055,14 @@ or Name (e.g. 104, The Lighthouse, Thatched Cottage)</td>
     "postcode": "A12 3BC"
   },
   "numbers": [
-    {"number": "01632960100", "type": "mbn", "action": "port"},
-    {"number": "01632960101", "type": "associated", "action": "port"},
-    {"number": "01632960102", "type": "associated", "action": "port"},
-    {"number": "01632960103", "type": "associated", "action": "port"},
-    {"number": "01632960104", "type": "associated", "action": "port"},
-    {"number": "01632960105", "type": "associated", "action": "port"},
-    {"number": "01632960106", "type": "associated", "action": "port"},
-    {"number": "01632960290", "type": "other", "action": "retain"}
+   {"rangeId":null,"number": "01632960100", "type": "mbn", "action": "port"},
+    {"rangeId":1,"number": "01632960101", "type": "associated", "action": "port"},
+    {"rangeId":1,"number": "01632960102", "type": "associated", "action": "port"},
+    {"rangeId":1,"number": "01632960103", "type": "associated", "action": "port"},
+    {"rangeId":1,"number": "01632960104", "type": "associated", "action": "port"},
+    {"rangeId":1,"number": "01632960105", "type": "associated", "action": "port"},
+    {"rangeId":1,"number": "01632960106", "type": "associated", "action": "port"},
+    {"rangeId":null,"number": "01632960290", "type": "other", "action": "retain"}
   ]
 }