3623433 - Multiple addresses maintained in the Business Partner (BP) Address Overview tab are not available for selection in Purchasing documents.

Even though, multiple addresses can be maintained in the Business Partner (BP) master data in "Address Overview" tab, only one address (the default one) is used in purchasing documents (i.e Purchase Order). 
Extra addresses in the BP Address Overview tab are not selectable in Purchasing documents.

SAP S/4HANA Cloud Public Edition

1. Create a Business Partner (BP) with Multiple Addresses in "Address Overview" Tab in General Data section.
2. Assign the Vendor role and the Purchasing Org Data role to the BP.
3. Create a Purchase Order (PO) with the same BP.
4. Check the Vendor Address in PO.
5. Attempt to Use Another BP Address. 

Additional addresses maintained in the Business Partner’s Address Overview tab are not selectable or visible in the PO. Currently this functionality is not available for Supplier master data.
As a workaround please create separate Business Partners for each addresses. 

To request this functionality, please submit a feature request through the SAP Customer Influence site. This will allow our product management team to review and consider your request for future enhancements.
For more details on the SAP Customer Influence site, please refer to the following resources:

🔹 KBA 2963059
🔹 SAP Continuous Influence Blog

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