Are OData V2 Services Available in OData V4 in SAP, and Which Ones?

[KhazaMohammad]

Hello SAP Community,

I hope you’re all doing well! I’m currently working on a project involving SAP Gateway and OData services, and I have a question regarding the availability of OData services across different versions.
We are using several OData V2 services in our current SAP system (SAP S/4HANA 2022), and we are planning to transition to OData V4 to leverage its advanced features (e.g., improved metadata, batch processing, and better support for modern APIs). However, I’m unsure whether the OData V2 services we rely on are also available in OData V4, or if we’ll need to redevelop or adjust our integrations.
Here’s what I’d like to know:
1- Are OData V2 services generally available in OData V4 in SAP systems? If not, how can we identify which ones have equivalent V4 versions?
2 - Specifically, we are using the following OData V2 services:

• API_PRODUCT_SRV – Using for Material Master as a Product
• API_EQUIPMENT – Using for Equipment Master
• API_FUNCTIONALLOCATION – Using Functional location
• API_MAINTENANCEBOM -  Using for Material BOM and Equipment BOM
• API_BILL_OF_MATERIAL_SRV -  Using for Material BOM
• API_MAINTENANCEPLAN -  Using for Maintenance Item
• API_MAINTENANCEPLAN -  Using for Maintenance Plan
• API_BUSINESS_PARTNER -  Using for Business Partne(Vendor/Customer)
• API_CLFN_CLASS_SRV – Using for Class
• API_CLFN_CHARACTERISTIC_SRV – Using for Characteristics
• API_MAINTNOTIFICATION – Using for Maintenance Notification
• API_MAINTENANCEORDER -  Using for Maintenance Order
  
  Can anyone confirm if these services (or their equivalents) are available in OData V4? If yes, what are their technical names in V4, and are there any significant differences in their structure or functionality?

        Is there a systematic way (e.g., a report, transaction, or SAP documentation) to check which OData V2             services have been migrated or reimplemented in ODataV4?

Looking forward to your expertise and guidance. Thank you in advance for your help!

Best regards,