Overview:- SAP Build apps enables quick application development which will reduce our coding dependence and give result oriented comprehensive user experience.

Motivation:-

In this blog you will learn how to post data from SAP Build Apps web application to S/4 HANA System.

Business Scenario:- Design a SAP build app which will post data to SAP S/4 HANA Z Table using OADAT POST Call.

Create an ODATA with Create Entity Method and Create a Custom Z Table.

Now Create a new SAP Builds app

Click on create button

Click on Build an Application

SAP Build an application

Click on Web & Mobile Application

Web and Mobile Application

Give the Project Name and Description

Create an application

Build apps UI Canvas

Build apps UI Canvas

Now Its time to create a Destination in SAP BTP cockpit under Connectivity, give all the required details as given in below screen shot’s and add the additional properties. In the URL give your ODATA URI and click on Save button then do the connection test.

Create Destination

Connection test

Connection Test

Go to SAP build app Auth tab and click on Enable Authentication

Auth Tab in UI Canvas

Click on SAP BTP authentication

BTP authentication

Click on Save button

                                                                    Authentication

Click on Data Tab and click on Add Integration button

Data Tab

Click on BTP Destination

BTP Destination

Select your created destination which has been created in destination under Connectivity in BTP cockpit

Select created Destination

Click on Install Integration

Install Integration

Click on Data Entity

Enable Data Entity

Enabled Data Entity and Save

Enabled Data Entity

Open UI Canvas and Click on green arrow for switch to Variable mode

UI Canvas

In the variable mode here we can define App and Data variable

Variable mode

Click on App variable as MATNR , MAKTX , I have only 2 fields in my ODATA & Custom Table.

Creation id App variable

Click on Data variable + sign and select the Data entity

Data Variable

Select the Data entity

Select Data Entity

Added Data variable and click on Save

Added data variable

Switch to view mode from variable mode

Switch to view mode

In UI Canvas drag and drop the fields

Drag and drop fields

Give Screen fields name as per your requirement

Screen fields name

Assign screen fields with App variable, select the fields and click on value icon

Assignment of app variable

After clicked on Value below popup will open, Select the Data and Variable

Data and Variable

click on App variable

App Variable

Select the App variable and click on Save , Please do the same activity to assign app variable for MAKTX fields and save.

Bind field with MATNR

MATKX assignment with App variable

MAKTX assign with App variable

Select the button and click on Show Logic for BUTTON 1

Select the button

On the bottom of screen button logic will be open

Button Logic window

as per our requirement, We need to perform the create operation so here in logic window drag and drop create record tool to logic canvas as shown below

After Dragged the Create record

Select item for drag and drop

Now its time to mapping so here you need to map button even to create record just drag the cursor from component tap to Create record ad shown below in yellow color and click on save

Mapping

Assign App variables with Data entity

Assign fields with App variable

Click on Formula

Formula

Map the Entity fields with App variable and Save

code -{Matnr: appVars.MATNR, Maktx: appVars.MAKTX}

Mapping of variables

Drag and drop the toast for user confirmation popup after data saved and right side you can give any custom message

Now its time to run the App

Launch the app

And then click on Preview on Web button select the App

Select the App

Preview of App

App Preview

Before enter the data , Showing S/4 Custom table entry

Table entry

Now its time to fill data on the Build apps and click on Save button

Saving Data to S4 System

Now its time to check table in the S/4 system

Table entry

Summary:

This blog can help you to understand how SAP Build Apps perform any ODATA call for POST Method.

Since I am also new to writing blogs, Need Expert suggestions & feedbacks are much appreciated.

If you like this blog post you can follow me for more blogs I will try to make in coming future specifically related to SAP BTP Technologies & SAP Build Apps.

Thank You,

Dinesh Kumar