Step-by-Step use Gateway Client to Test Operation--Update

[Former Member]

1.In Fiori UI APP-Tasks

I create a task using description "Sara test 20150909" and guid'3440B5B1-72DE-1ED5-95DB-3B2C4244BC62'.

2.In SAP Gateway Client.

Step 1. First, we will use Get method to read this task.

Http method： Get

Request URI:  /sap/opu/odata/sap/CRM_TASK/Tasks(guid'3440B5B1-72DE-1ED5-95DB-3B2C4244BC62')

Protocol: HTTP

Do action: Hit F8

Result:

HTTP Respond Code:200

And got the information of this request.

Step 2. Then, Once I get the response, I click on “Use as Request” button, which will populate the request body same as the current response.

Result:

Step 3.  Now add  the values in the request  header.

NOTE1: For update, we need to add If-Match in header.

            The purpose of this feature is to allow efficient updates of cached information with a minimum amount of transaction overhead. It is also used, on updating requests, to prevent inadvertent modification of the wrong version of a resource.

NOTE2: The value in is: W/"'【Etag】'".

                 For 【Etag】(One property of Entity) is the only field which can distinguish version.

Result:

Step 4.  Now change  the values in the request  body as you think.

In this case, I will change description from  <d:Description>Sara test 20150909</d:Description> to

                                                               <d:Description>Sara test 20150909 Updated Here</d:Description>.

when Merge

                                                               <d:Description>Merge</d:Description>.

Result:

Step 5.

Http method： PUT

Request URI:  /sap/opu/odata/sap/CRM_TASK/Tasks(guid'3440B5B1-72DE-1ED5-95DB-3B2C4244BC62')

Protocol: HTTP

Do action: Hit F8

Result:

HTTP Respond Code:204 (204:  The server successfully processed the request, but is not returning any content.)

For update, you can also use HTTP method: Merge

Http method： Merge

Step 6. Do double check in DB.

When Merge:

Step 7. Do double check in UI.

Finish.