Seeking Guidance on Mapping Screens to Fields in SAP S/4 HANA

[rahuljain257]

Hello Everyone,

I am new to the SAP S/4 HANA world and trying to transition into the technical field. My background is in SAP B1, where SAP provides excellent documentation that helps map screens to tables and fields.

In SAP S/4 HANA, I am finding it challenging to understand the mapping process. For example, if I have a specific screen, how can I identify the fields that might be mapped to either custom CDS views or public endpoints?

I am feeling a bit lost and would greatly appreciate your support and guidance on this matter.

[lyagalaupender]

@Upender, When Im creating custom cds view with reference, i getting an Error as the cds view entity is not permitted. please, how do create without error please can anyone, reply to me help

[MaryiaHlushko · Accepted solution]

Hello @rahuljain257 ,

You can use the developer tool of your browser to find out the data source of the application.

For example, if you are using Google Chrome, just open your application and press the F12 button to open the developer tool. Also, you can open it by the following way:

Then navigate to the Network tab and set a filter for the batch requests.

Then reload the page of your application or just press the F5 button. All application data will be requested from the backend by following batch requests to an OData service.

To see the details of a batch request, click on it. On the header tab of the request, you will find the Request URL.

In the request url, you can see the name of the OData Service. For the service that is based on RAP, there you can find names of service binding and service definition.

You can open service definition to find all exposed CDS views and corresponding aliases to them if they were defined.

On the Payload tab of the request, you will find GET requests to entities of the service. There you can find the name of CDS view or an alias to it. If there is no CDS view name, you can find it in the service definition using the alias. 

In the request, you can see requested entity and used association. Also, after $select= you will find a list of all requested fields.

To see what field is displayed on the UI, you need to click on the following button.

Then select a field on the UI (for example, WorkerType) and click on it.

The elements tab will be opened, and the part related to the selected element will be highlighted. There you will find the data field name BasicRoleCategory and CDS view name C_WorkAssignment.

In the same way, you can find details for the table field CostCenter. There you will find the CDS view name C_WorkAssignment, association for the table _WorkAssignmentDetails and the table field name CostCenter.

In the same way, you can find details for the table field Manager. There you will find the CDS view name C_WorkAssignment, association for the table _WorkAssignmentDetails and the table field name ManagerEmployee.

I hope it will help you to map all required fields.

Best Regards,

Maryia

[rahuljain257 · Accepted solution]

Thank you @MaryiaHlushko for your response. It was really helpful. How did you came to know about this complicated process ?