diff --git a/CHANGES_NEXT_RELEASE b/CHANGES_NEXT_RELEASE
index d3f5a12fa..bf8aa8394 100644
--- a/CHANGES_NEXT_RELEASE
+++ b/CHANGES_NEXT_RELEASE
@@ -1 +1 @@
-
+- ADD: response header about procesing time in measures request(iotagent-node-lib#1650)
diff --git a/Changelog b/Changelog
index 8f03d90f9..41ab70250 100644
--- a/Changelog
+++ b/Changelog
@@ -1,5 +1,3 @@
-- ADD: reponse header about processing time (iotagent-node-lib#1650)
-
 3.6.0 (September 18th, 2024)
 
 - Upgrade body-parser dep from 1.20.0 to 1.20.3
diff --git a/docs/usermanual.md b/docs/usermanual.md
index 36b90aa6e..aa24cae61 100644
--- a/docs/usermanual.md
+++ b/docs/usermanual.md
@@ -118,19 +118,22 @@ It is possible to report as a measure a NGSI-v2 or NGSI-LD payload when related
 `payloadType` `ngsiv2` or `ngsild`. In these cases payload is ingested as measure where entity attributes are measure
 attributes.
 
-Note that the entity ID and type in the measure are also include as attributes `measure_id` and `measure_type` as described 
-[here](https://github.dev/telefonicaid/iotagent-node-lib/doc/api.md#special-measures-and-attributes-names) (both using 
-attribute type `Text`). The ID and type of the entity updated at Context Broker is taken from device/group configuration or provision,
+Note that the entity ID and type in the measure are also include as attributes `measure_id` and `measure_type` as
+described [here](https://github.dev/telefonicaid/iotagent-node-lib/doc/api.md#special-measures-and-attributes-names)
+(both using attribute type `Text`). The ID and type of the entity updated at Context Broker is taken from device/group
+configuration or provision,
 
-However, it is possible to use the same entity ID that the original one by using `entityNameExp` 
-at [device group provision](https://github.com/telefonicaid/iotagent-node-lib/blob/master/doc/api.md#config-group-datamodel), this way:
+However, it is possible to use the same entity ID that the original one by using `entityNameExp` at
+[device group provision](https://github.com/telefonicaid/iotagent-node-lib/blob/master/doc/api.md#config-group-datamodel),
+this way:
 
 ```
 "entityNameExp": "measure_id"
 ```
 
-The `actionType` used in the update sent to Context Broker is taken from the measure in the case that measure corresponds to
-a NGSI-v2 batch update. In other cases (i.e. NGSI-LD or NGSI-v2 non-batch update), the `actionType` is the default one (`append`).
+The `actionType` used in the update sent to Context Broker is taken from the measure in the case that measure
+corresponds to a NGSI-v2 batch update. In other cases (i.e. NGSI-LD or NGSI-v2 non-batch update), the `actionType` is
+the default one (`append`).
 
 For instance, given an incoming **measure** as the follwing one:
 
@@ -138,7 +141,7 @@ For instance, given an incoming **measure** as the follwing one:
 {
     "id": "MyEntityId1",
     "type": "MyEntityType1",
-    "attr1": { "type": "Text", "value": "MyAttr1Value"}
+    "attr1": { "type": "Text", "value": "MyAttr1Value" }
 }
 ```
 
@@ -146,11 +149,11 @@ It would persist an entity into the Context Broker like the following one:
 
 ```json
 {
-    "id":"MyProvisionID",
-    "type":"MyProvisionType",
-    "attr1": { "type": "Text", "value": "MyAttr1Value"},
-    "measure_id": {"type": "Text","value": "MyEntityId1"},
-    "measure_type":{"type": "Text","value": "MyEntityType1"}
+    "id": "MyProvisionID",
+    "type": "MyProvisionType",
+    "attr1": { "type": "Text", "value": "MyAttr1Value" },
+    "measure_id": { "type": "Text", "value": "MyEntityId1" },
+    "measure_type": { "type": "Text", "value": "MyEntityType1" }
 }
 ```
 
@@ -521,6 +524,10 @@ Content-type: application/json
 }
 ```
 
+#### Time processing
+
+HTTP bindig is returning in a HTTP header named `X-Processing-Time` processing time expended by current request.
+
 ### MQTT binding
 
 MQTT binding is based on the existence of a MQTT broker and the usage of different topics to separate the different