--- parser: v2 auto_validation: true time: 15 tags: [ tutorial>intermediate, programming-tool>abap-development, software-product>sap-business-technology-platform, software-product>sap-btp--abap-environment, programming-tool>abap-extensibility] primary_tag: software-product-function>sap-s-4hana-cloud--abap-environment author_name: Julie Plummer author_profile: https://github.com/julieplummer20 slug: abap-s4hcloud-procurement-po-customlogic-tracing canonical_url: https://developers.sap.com/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing --- # Create Custom Logic Using Key User Extensibility and Perform Trace Create custom logic for an existing custom field in S/4HANA Cloud ABAP Environment, then check its parameters using the Custom Logic Tracing app ## Prerequisites - You have a license for SAP S/4HANA Cloud - You are familiar with Key User extensibility in SAP S/4HANA Cloud. If not, see the **More Information** section - You are familiar with the app **Custom Logic Tracing**. If not, see the **More Information** section - In SAP Fiori launchpad, you have the following authorizations: - **`SAP_BR_PURCHASER`** for the app **Create Purchase Order - Advanced** - **`SAP_BR_ADMINISTRATOR`** for **Custom Logic Tracing** and **Custom Logic** - You have created a custom field using Key User extensibility **`yy1_zhdrprnt2_pdh_000`** - In Custom Logic, you have created a `BAdI` implementation `YY1_FILLHEADERCUSTOMFIELDS_000` in the business context and `BAdI` definition **Modify Purchase Order Header (`MM_PUR_S4_PR_CHECK`)** ## You will learn - How to create custom logic for an existing custom field in the app **Custom Fields** - How to run a trace for the Fiori app **Create Purchase Order** in the app **Custom Logic Tracing** - How to check the output value of this custom field using **Custom Logic Tracing** - How to check the custom logic of this custom field, in **Custom Fields** ## Intro >The administrator receives an welcome e-mail after provisioning. This e-mail includes the system URL. By removing `/ui` you can log into the SAP S/4HANA Cloud ABAP Environment system. Further information can be found [Developer Extensibility: Connect to the ABAP System](https://help.sap.com/docs/SAP_S4HANA_CLOUD/6aa39f1ac05441e5a23f484f31e477e7/4b962c243a3342189f8af460cc444883.html?locale=en-US). Throughout this tutorial, the placeholder `###` or `000` is used. Always replace this with your initials or group number. --- ### Apply custom logic 1. Open the app **Custom Fields**. ![step1a-open-custom-fields](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step1a-open-custom-fields.png) 2. Change to the **Custom Logic** tab, search for the `BAdI` implementation **`YY1_FILLHEADERCUSTOMFIELD_000`**. ![Link text e.g., Destination screen](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step1b-custom-fields-tabs.png) 3. Open the **Details** screen (by choosing the arrow on the right). ![step6b-badi-implementation-overview](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step6b-badi-implementation-overview.png) You can now see the Published Logic and Draft Logic, if they exist, relevant to the custom field. ![step1c-custom-logic-empty](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step1c-custom-logic-empty.png) ### Add custom logic 1. Comment out any existing code. 2. In the custom logic for the field **`yy1_zhdrprnt2_pdh_000`**, copy the following code. This code will copy the content from a standard field, `purchaseorder-supplyingplant` into the custom field, **`yy1_zhdrprnt2_pdh_000`**, where `supplyingplant` is filled. ```ABAP IF purchaseorder-supplyingplant is not initial. purchaseorderchange-yy1_zhdrprnt2_pdh_000 = purchaseorder-supplyingplant. endif. ``` ![step2a-add-custom-logic](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step2a-add-custom-logic.png) 3. Save and publish your custom code. You are now ready to trace the effects of your custom code when a purchase order is created. ### Start trace 1. Open the app **Custom Logic Tracing** and choose **Start Trace**. ![step1a-start-trace](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step1a-start-trace.png) 2. Enter the following information, remembering to change the placeholder to your group number or initials: | Field Name | Value | :------------- | :------------- | Name | **Test Create PO Custom Fields `000`** | Trace User | **Your user** | Stored until | *future date in the format `dd.mm.yyyy`* | Lifetime | **15** ![step1b-start-trace-details](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step1b-start-trace-details.png) ### Create purchase order **IMPORTANT: While Trace is running**, create a purchase order as follows. 1. Open **Create Purchase Order - Advanced**. ![step4a-create-po](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step4a-create-po.png) 2. In the top header, change the Order Type to **Stock Transport Order** and the Supplying Plant to **1010**. ![step4b-change-to-stock-transport-order](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step4b-change-to-stock-transport-order.png) 3. Enter the **Supplying Plant**, **1010** ![step4c-supplying-plant](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step4c-supplying-plant.png) 4. In the header section, go to the **Custom Fields** tab, check that the custom field **ZPOHDRPRINT2** now contains the value **1010**. ![step4a-create-po-custom-field](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step4a-create-po-custom-field.png) 5. On the **Org Data** tab, enter the following: | Field Name | Value | :------------- | :------------- | Purchase Organization | **1010** | Group | **001** | Company code | **1010** > If you check the custom field **`YY1_ZHDRPRNT2_PDH_000`**, it is now filled with the same value as Supplying Plant, **1010**. ![step2c-fill-org-data](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step2c-fill-org-data.png) 6. In the **Item Overview** section, enter the following. Ignore any warnings. | Field Name | Value | :------------- | :------------- | Material | **`Tg0501`** | PO Quantity | **1** | Delivery Date | *future date in the format `dd.mm.yyyy`* | Plant | **1010** ![step4d-fill-item-overview-material](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step4d-fill-item-overview-material.png) > The other fields - Material Group, Plant Storage Location - should be filled automatically. ![step2d-fill-item-overview](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step2d-fill-item-overview.png) 7. Choose **Save**. ![step4e-note-stock-transport-number](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step4e-note-stock-transport-number.png) ### Check trace 1. Choose **Finish trace**. ![step5a-finish-trace](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step5a-finish-trace.png) 2. Open the trace. In **Trace Hierarchy**, choose the last call of `BAdI` implementation `YY1_FILLHEADERCUSTOMFIELD_000`. (This is necessary because the `BAdI` implementation is called several times.) Then choose the parameter **Purchase Order**. ![step5b-choose-purchase-order](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step5b-choose-purchase-order.png) 3. Scroll right down to the field **`YY1_ZHDRPRNT2_PDH_000`**. Check that its value = **1010**. ![step5c-choose-custom-field](https://raw.githubusercontent.com/sap-tutorials/abap-core-development/main/tutorials/abap-s4hcloud-procurement-po-customlogic-tracing/step5c-choose-custom-field.png) ### Test yourself ### More information - SAP Help Portal: [Business Add-Ins (`BAdIs`)](https://help.sap.com/docs/ABAP_PLATFORM_NEW/46a2cfc13d25463b8b9a3d2a3c3ba0d9/8ff2e540f8648431e10000000a1550b0.html?locale=en-US) - SAP Help Portal: ABAP Platform [App Implementation: Custom Logic Tracing](https://help.sap.com/docs/ABAP_PLATFORM_NEW/dd52b271fd064d84b4085a87209cb1bd/76099babb7c74f6d8c2ecdaf2c07fa14.html?locale=en-US) - SAP Help Portal: Sourcing and Procurement: [Adaptation of App Behavior (Overview and List of Available `BAdIs`)](https://help.sap.com/docs/SAP_S4HANA_CLOUD/0e602d466b99490187fcbb30d1dc897c/259a396e6bdb4d08b130049880a3920f.html?locale=en-US) - Blog post: [Key User Extensibility...: Custom Field with ABAP implemented Value Help](https://blogs.sap.com/2022/07/26/sap-s-4hana-key-user-extensibility-powered-by-embedded-steampunk-custom-field-with-abap-implemented-value-help/) - Video of this tutorial: [Running a Trace in SAP Key User Extensibility](https://www.youtube.com/watch?v=4xd4wuyvqfs) ---