diff --git a/VRANbs-API.md b/VRANbs-API.md
index 98ae5a1..8f0a4e2 100644
--- a/VRANbs-API.md
+++ b/VRANbs-API.md
@@ -1,295 +1,316 @@
-## VRANbs API v0.2
-[<< Home](README.md)  
-
-FarmMaps is an asynchronous architecture, the API flow keeps this in mind.
-The API expects that all data is already processed and available provided, for example through the normal FarmMaps flow (frontend).
-
-For the currently available public FarmMaps API you can take a look at swagger: http://farmmaps.awtest.nl/swagger/index.html  
-
-**Limitations**
-* Currently VRANbs only accepts input tiffs in WGS84/EPSG4326
-* Data isn't automatically deleted as farmmaps has no support for this.
-    * But API users can delete their own items through the farmmaps API.
-
-**Input preperation**
-* Users can upload their own data if needed. (in case of when FarmMaps has not processed the required data).
-    * The farmmaps file API can be used for this.
-
-**Users can poll the task api to see if a task is completed**  
-**This can be achieved with the task execution id obtained from calling the 'ItemTask' API.**  
-[Poll task status](Polling-task-status.md)  
-
-**Users can query the API for child items of a cropfield to see what items it has.**
-
-### API flow
-* Authenticate User
-* Optional steps
-    * *Create cropfield through FarmMaps API*
-        * Item 'vnd.farmmaps.itemtype.cropfield' must be created with its data as specified in the api.
-        * Task 'vnd.farmmaps.task.workflow' needs to be executed to aggregate all needed data.
-            * This is an asynchronous process and can take a while before all data is collected in FarmMaps.
-    * *Upload own data*
-        * IF shape data, convert to geotiff.
-    * *Create 'vnd.farmmaps.itemtype.user.input' item for targetn calculation.*
-        * *Task 'vnd.farmmaps.task.vranbs' can be executed with the 'targetn' operation*
-    * *Task 'vnd.farmmaps.task.vranbs' can be executed with 'uptake' operation* to create an nitrogen uptake map.
-* Task 'vnd.farmmaps.task.vranbs' must be executed with 'nitrogen' operation to create an appliance map.
-* Task 'vnd.farmmaps.task.taskmap' can be executed to create a taskmap.
-* Download item data (tiff of shape)
-
-### Steps
-[Authentication](Authentication.md)  
-
-##### Optional
-[Create Cropfield](Create-Cropfield.md)  
-[Upload Data](Upload-Data.md)  
-
-###### Transform shape to geotiff
-The VRANbs task only processes tiff items as input.  
-If your input data is a processed shape file it first needs to be converted to geotiff, this can be done with the 'ShapeToGeoTiffTask'.  
-
-Pass the code of the shape item into the {code} parameter, this creates a new item with tiff data as the parent of the shape item.  
-This new geotiff item should be used as input to the vranbs task.
-
-> Request
-```javascript
-POST /api/v1/items/{code}/tasks
-{
-  "taskType": "vnd.farmmaps.task.shapetogeotiff"
-}
-```  
-> Response 201
-```javascript
-{
-  "code": "string",
-  "taskType": "vnd.farmmaps.task.shapetogeotiff"
-}
-```
-
-Response 400 Tasktype not found  
-Response 401 Not authenticated  
-Response 403 No WRITE permissions in item  
-Response 404 Item not found  
-
-##### Using VRA Nitrogen fertilization task
-The VraNbs task currently supports 3 operations:  
-* **targetn** - calculates the target nitrogen based on target yield.  
-* **uptake** - creates the nitrogen uptake map.  
-* **application** - creates the nitrogen fertilization application map. 
-
-###### targetn operation
-Create a 'vnd.farmmaps.itemtype.user.input' item to use in this operation.  
-(step not needed if you already know the target nitrogen you want to work with.)  
-The user.input item must parent the '{user_code}:USER_IN' item and can be obtained by calling following request:  
-
-> Request  
-```javascript
-GET /api/v1/Folders/my_uploads
-```
-> Response 201
-```javascript
-{
-  "url": "/api/v1/folders/{user_code}:USER_IN",
-  "code": "{user_code}:USER_IN",
-  "name": "Uploaded",
-  "created": "2020-03-04T14:41:41.099557",
-  "updated": "2020-03-04T14:41:41.099557",
-  "itemType": "FOLDER",
-  "size": 0,
-  "state": 0,
-  "thumbnail": false
-}
-```  
-
-**Create item**  
-Create user.input item, pass just obtained parent code as parameter in {user_code}.  
-> Request
-```javascript
-POST /api/v1/items
-{
-  "parentCode": "{user_code}:USER_IN",
-  "itemType": "vnd.farmmaps.itemtype.user.input",
-  "name": "TargetN",
-  "dataDate": "2020-03-02T14:22:09.265Z"
-}
-```
-
-> Response 201 Created
-```javascript
-{
-  "parentCode": "string",
-  "geometry": {},
-  "data": {},
-  "tags": [
-    "string"
-  ],
-  "url": "string",
-  "code": "string",
-  "name": "string",
-  "created": "2019-12-18T10:16:21.455Z",
-  "updated": "2019-12-18T10:16:21.455Z",
-  "dataDate": "2019-12-18T10:16:21.455Z",
-  "itemType": "string",
-  "sourceTask": "string",
-  "size": 0,
-  "state": 0,
-  "thumbnail": true
-}
-```  
-Response 401 Not authenticated  
-Response 403 No WRITE permissions in parent item  
-Response 404 Parent Item not found  
-
-
-**Call the vranbs task**  
-Execute the VRANbsTask with the item code of the cropfield as parameter inside {code}. 
-Use the code obtained from creating the user.input item as a parameter in {itemCode}.  
-> Request
-```javascript
-POST /api/v1/items/{code}/tasks
-{
-  "taskType": "vnd.farmmaps.task.vranbs",
-  "attributes": {
-      "operation": "targetn",
-    "inputCode": "{itemCode}",
-    "plantingDate": "2020-02-01T00:00:00.000Z",
-    "measurementDate": "2020-06-01T00:00:00.000Z",
-    "purposeType": "consumption", // consumption, fries, potato, starch
-    "targetYield": "60"
-  }
-}
-```  
-> Response 201
-```javascript
-{
-  "code": "string",
-  "taskType": "vnd.farmmaps.task.workflow"
-}
-```
-
-Response 400 Tasktype not found  
-Response 401 Not authenticated  
-Response 403 No WRITE permissions in item  
-Response 404 Item not found  
-
-**Query user.input targetN item**  
-You can query the user.input item to get the calculated targetN value from the data field of the item.  
-> Request
-```javascript
-GET /api/v1/items/{code}
-```
-
-> Response 200
-```javascript
-{
-  "parentCode": "string",
-  "geometry": {},
-  "data": {
-      "TSum": "2700",
-      "TargetYield": "60",
-      "TargetN": "249.2341"
-  },
-  "tags": [
-    "string"
-  ],
-  "url": "string",
-  "code": "string",
-  "name": "TargetN",
-  "created": "2019-12-18T10:16:21.455Z",
-  "updated": "2019-12-18T10:16:21.455Z",
-  "dataDate": "2019-12-18T10:16:21.455Z",
-  "itemType": "vnd.farmmaps.itemtype.user.input",
-  "sourceTask": "string",
-  "size": 0,
-  "state": 0,
-  "thumbnail": true
-}
-```
-
-
-###### Uptake map operation
-Execute the VRANbsTask with the item code of the cropfield as parameter inside {code}.  
-Use the input map code inside {itemCode}, specifying an inputCode for the input data item.  
-
-{itemCode} needs the code of the data input item passed into it. ex. uploaded isaria/data data.  
-The resulting nitrogen uptake map will be created as a child item under the cropfield item (this can be queried).    
-> Request
-```javascript
-POST /api/v1/items/{code}/tasks
-{
-  "taskType": "vnd.farmmaps.task.vranbs",
-  "attributes": {
-      "operation": "uptake",
-      "inputCode": "{itemCode}",
-      "plantingDate": "2020-02-01T00:00:00.000Z",
-      "measurementDate": "2020-06-01T00:00:00.000Z",
-      "inputType": "irmi", // yara, ci, irmi or wdvi
-  }
-}
-```  
-> Response 201
-```javascript
-{
-  "code": "string", // code of task operation, can be queried for status
-  "taskType": "vnd.farmmaps.task.vranbs",
-  "attributes": {
-      "operation": "uptake",
-      "inputCode": "{itemCode}",
-      "inputType": "irmi", // yara, ci, irmi or wdvi
-  }
-}
-```
-
-Response 400 Tasktype not found  
-Response 401 Not authenticated  
-Response 403 No WRITE permissions in item  
-Response 404 Item not found  
-
-###### Application map operation
-Execute the VRANbsTask with the item code of the cropfield as parameter inside {code}.  
-Use the input map code inside {itemCode}, specifying an inputCode for the input data item.  
-
-{itemCode} needs the code of the data input item passed into it. ex. uploaded isaria/data data.  
-The resulting nitrogen application map will be created as a child item under the cropfield item (this can be queried).    
-> Request
-```javascript
-POST /api/v1/items/{code}/tasks
-{
-  "taskType": "vnd.farmmaps.task.vranbs",
-  "attributes": {
-      "operation": "application",
-      "inputCode": "{itemCode}",
-      "plantingDate": "2020-02-01T00:00:00.000Z",
-      "measurementDate": "2020-06-01T00:00:00.000Z",
-      "inputType": "irmi", // yara, ci, irmi or wdvi
-      "targetN": "249.22948"
-  }
-}
-```  
-> Response 201
-```javascript
-{
-  "code": "string", // code of task operation, can be queried for status
-  "taskType": "vnd.farmmaps.task.vranbs",
-  "attributes": {
-      "operation": "nitrogen",
-      "inputCode": "{itemCode}",
-      "inputType": "irmi", // yara, ci, irmi or wdvi
-      "targetN": "249.22948"
-  }
-}
-```
-
-Response 400 Tasktype not found  
-Response 401 Not authenticated  
-Response 403 No WRITE permissions in item  
-Response 404 Item not found  
-
-##### Create taskmap
-[Create Taskmap](Create-Taskmap.md)
-
-##### Download the data
-In case the data is available it can be downloaded with the items API.
-> Request
-```javascript
-GET /api/v1/items/{itemcode}/download
+## VRANbs API v0.3
+[<< Home](README.md)  
+
+FarmMaps is an asynchronous architecture, the API flow keeps this in mind.
+The API expects that all data is already processed and available provided, for example through the normal FarmMaps flow (frontend).
+
+For the currently available public FarmMaps API you can take a look at swagger: http://farmmaps.awtest.nl/swagger/index.html  
+
+**Limitations**
+* Currently VRANbs only accepts input tiffs in WGS84/EPSG4326
+* Data isn't automatically deleted as farmmaps has no support for this.
+    * But API users can delete their own items through the farmmaps API.
+
+**Input preperation**
+* Users can upload their own data if needed. (in case of when FarmMaps has not processed the required data).
+    * The farmmaps file API can be used for this.
+
+**Users can poll the task api to see if a task is completed**  
+**This can be achieved with the task execution id obtained from calling the 'ItemTask' API.**  
+[Poll task status](Polling-task-status.md)  
+
+**Users can query the API for child items of a cropfield to see what items it has.**
+
+### API flow
+* Authenticate User
+* Optional steps
+    * *Create cropfield through FarmMaps API*
+        * Item 'vnd.farmmaps.itemtype.cropfield' must be created with its data as specified in the api.
+        * Task 'vnd.farmmaps.task.workflow' needs to be executed to aggregate all needed data.
+            * This is an asynchronous process and can take a while before all data is collected in FarmMaps.
+    * *Upload own data*
+        * IF shape data, convert to geotiff.
+    * *Create 'vnd.farmmaps.itemtype.user.input' item for targetn calculation.*
+        * *Task 'vnd.farmmaps.task.vranbs' can be executed with the 'targetn' operation*
+    * *Task 'vnd.farmmaps.task.vranbs' can be executed with 'uptake' operation* to create an nitrogen uptake map.
+* Task 'vnd.farmmaps.task.vranbs' must be executed with 'nitrogen' operation to create an appliance map.
+* Task 'vnd.farmmaps.task.taskmap' can be executed to create a taskmap.
+* Download item data (tiff of shape)
+
+### Steps
+[Authentication](Authentication.md)  
+
+##### Optional
+[Create Cropfield](Create-Cropfield.md)  
+[Upload Data](Upload-Data.md)  
+
+###### Transform shape to geotiff
+The VRANbs task only processes tiff items as input.  
+If your input data is a processed shape file it first needs to be converted to geotiff, this can be done with the 'ShapeToGeoTiffTask'.  
+
+Pass the code of the shape item into the {code} parameter, this creates a new item with tiff data as the parent of the shape item.  
+This new geotiff item should be used as input to the vranbs task.
+
+> Request
+```javascript
+POST /api/v1/items/{code}/tasks
+{
+  "taskType": "vnd.farmmaps.task.shapetogeotiff"
+}
+```  
+> Response 201
+```javascript
+{
+  "code": "string",
+  "taskType": "vnd.farmmaps.task.shapetogeotiff"
+}
+```
+
+Response 400 Tasktype not found  
+Response 401 Not authenticated  
+Response 403 No WRITE permissions in item  
+Response 404 Item not found  
+
+##### Using VRA Nitrogen fertilization task
+The VraNbs task currently supports 3 operations:  
+* **targetn** - calculates the target nitrogen based on target yield.  
+* **uptake** - creates the nitrogen uptake map.  
+* **application** - creates the nitrogen fertilization application map. 
+
+###### targetn operation
+Create a 'vnd.farmmaps.itemtype.user.input' item to use in this operation.  
+(step not needed if you already know the target nitrogen you want to work with.)  
+The user.input item must parent the '{user_code}:USER_IN' item and can be obtained by calling following request:  
+
+> Request  
+```javascript
+GET /api/v1/Folders/my_uploads
+```
+> Response 201
+```javascript
+{
+  "url": "/api/v1/folders/{user_code}:USER_IN",
+  "code": "{user_code}:USER_IN",
+  "name": "Uploaded",
+  "created": "2020-03-04T14:41:41.099557",
+  "updated": "2020-03-04T14:41:41.099557",
+  "itemType": "FOLDER",
+  "size": 0,
+  "state": 0,
+  "thumbnail": false
+}
+```  
+
+**Create item**  
+Create user.input item, pass just obtained parent code as parameter in {user_code}.  
+> Request
+```javascript
+POST /api/v1/items
+{
+  "parentCode": "{user_code}:USER_IN",
+  "itemType": "vnd.farmmaps.itemtype.user.input",
+  "name": "TargetN",
+  "dataDate": "2020-03-02T14:22:09.265Z"
+}
+```
+
+> Response 201 Created
+```javascript
+{
+  "parentCode": "string",
+  "geometry": {},
+  "data": {},
+  "tags": [
+    "string"
+  ],
+  "url": "string",
+  "code": "string",
+  "name": "string",
+  "created": "2019-12-18T10:16:21.455Z",
+  "updated": "2019-12-18T10:16:21.455Z",
+  "dataDate": "2019-12-18T10:16:21.455Z",
+  "itemType": "string",
+  "sourceTask": "string",
+  "size": 0,
+  "state": 0,
+  "thumbnail": true
+}
+```  
+Response 401 Not authenticated  
+Response 403 No WRITE permissions in parent item  
+Response 404 Parent Item not found  
+
+
+**Call the vranbs task**  
+Execute the VRANbsTask with the item code of the cropfield as parameter inside {code}. 
+Use the code obtained from creating the user.input item as a parameter in {itemCode}.  
+> Request
+```javascript
+POST /api/v1/items/{code}/tasks
+{
+  "taskType": "vnd.farmmaps.task.vranbs",
+  "attributes": {
+      "operation": "targetn",
+    "inputCode": "{itemCode}",
+    "plantingDate": "2020-02-01T00:00:00.000Z",
+    "measurementDate": "2020-06-01T00:00:00.000Z",
+    "purposeType": "consumption", // consumption, fries, potato, starch
+    "targetYield": "60"
+  }
+}
+```  
+> Response 201
+```javascript
+{
+  "code": "string",
+  "taskType": "vnd.farmmaps.task.workflow"
+}
+```
+
+Response 400 Tasktype not found  
+Response 401 Not authenticated  
+Response 403 No WRITE permissions in item  
+Response 404 Item not found  
+
+**Query user.input targetN item**  
+You can query the user.input item to get the calculated targetN value from the data field of the item.  
+> Request
+```javascript
+GET /api/v1/items/{code}
+```
+
+> Response 200
+```javascript
+{
+  "parentCode": "string",
+  "geometry": {},
+  "data": {
+      "TSum": "2700",
+      "TargetYield": "60",
+      "TargetN": "249.2341"
+  },
+  "tags": [
+    "string"
+  ],
+  "url": "string",
+  "code": "string",
+  "name": "TargetN",
+  "created": "2019-12-18T10:16:21.455Z",
+  "updated": "2019-12-18T10:16:21.455Z",
+  "dataDate": "2019-12-18T10:16:21.455Z",
+  "itemType": "vnd.farmmaps.itemtype.user.input",
+  "sourceTask": "string",
+  "size": 0,
+  "state": 0,
+  "thumbnail": true
+}
+```
+
+
+###### Uptake map operation
+Execute the VRANbsTask with the item code of the cropfield as parameter inside {code}.  
+Use the input map code inside {itemCode}, specifying an inputCode for the input data item.  
+
+{itemCode} needs the code of the data input item passed into it. ex. uploaded isaria/data data.  
+The resulting nitrogen uptake map will be created as a child item under the cropfield item (this can be queried).    
+> Request
+```javascript
+POST /api/v1/items/{code}/tasks
+{
+  "taskType": "vnd.farmmaps.task.vranbs",
+  "attributes": {
+      "operation": "uptake",
+      "inputCode": "{itemCode}",
+      "plantingDate": "2020-02-01T00:00:00.000Z",
+      "measurementDate": "2020-06-01T00:00:00.000Z",
+      "inputType": "irmi", // yara, ci, irmi or wdvi
+  }
+}
+```  
+> Response 201
+```javascript
+{
+  "code": "string", // code of task operation, can be queried for status
+  "taskType": "vnd.farmmaps.task.vranbs",
+  "attributes": {
+      "operation": "uptake",
+      "inputCode": "{itemCode}",
+      "inputType": "irmi", // yara, ci, irmi or wdvi
+  }
+}
+```
+
+Response 400 Tasktype not found  
+Response 401 Not authenticated  
+Response 403 No WRITE permissions in item  
+Response 404 Item not found  
+
+###### Application map operation
+Execute the VRANbsTask with the item code of the cropfield as parameter inside {code}.  
+Use the input map code inside {itemCode}, specifying an inputCode for the input data item.  
+
+{itemCode} needs the code of the data input item passed into it. ex. uploaded isaria/data data.  
+The resulting nitrogen application map will be created as a child item under the cropfield item (this can be queried).    
+> Request
+```javascript
+POST /api/v1/items/{code}/tasks
+{
+  "taskType": "vnd.farmmaps.task.vranbs",
+  "attributes": {
+      "operation": "application",
+      "inputCode": "{itemCode}",
+      "plantingDate": "2020-02-01T00:00:00.000Z",
+      "measurementDate": "2020-06-01T00:00:00.000Z",
+      "inputType": "irmi", // yara, ci, irmi or wdvi
+      "targetN": "249.22948"
+  }
+}
+```  
+> Response 201
+```javascript
+{
+  "code": "string", // code of task operation, can be queried for status
+  "taskType": "vnd.farmmaps.task.vranbs",
+  "attributes": {
+      "operation": "nitrogen",
+      "inputCode": "{itemCode}",
+      "inputType": "irmi", // yara, ci, irmi or wdvi
+      "targetN": "249.22948"
+  }
+}
+```
+
+Response 400 Tasktype not found  
+Response 401 Not authenticated  
+Response 403 No WRITE permissions in item  
+Response 404 Item not found  
+
+##### Optional input parameters #####
+There are some optional task attribute input parameters for greater flexibility.
+
+* **inputLayerName**  
+Allows you to specify which layer to use for an input item.
+* **minPercentile** value between 0.0 - 1.0  
+Allows you to specify the minimum percentile value to 'filter' lower bound input data
+* **maxPercentile** value between 0.0 - 1.0  
+Allows you to specify the maximum percentile value to 'filter' upperbound bound input data
+
+Default percentile values for herbicide are 0.0 and 1.0.  
+Default dates are 'inherited' from the cropfield item passed to the task.  
+
+```javascript
+{
+    "inputLayerName": "customLayerName",
+    "minPercentile": "0.1",
+    "maxPercentile": "0.95"
+}
+```
+
+##### Create taskmap
+[Create Taskmap](Create-Taskmap.md)
+
+##### Download the data
+In case the data is available it can be downloaded with the items API.
+> Request
+```javascript
+GET /api/v1/items/{itemcode}/download