Dear WPBay Team,

Thank you for identifying the duplicate-SKU issue. Version 6.0.5 checks whether a product SKU is already assigned before attempting the product insert or update. If another product uses it, the manager receives a clear, localized validation message. When editing a product, the lookup excludes that same product so its existing SKU can be retained. The unique database index remains as a final safeguard.

I added the validation message to all eight interface languages and updated the release documentation. Source-level checks cover duplicate rejection on create and edit, and allow saving an unchanged SKU on its own product. This workspace does not contain a PHP CLI or WordPress database/site, so a full browser/database retest could not be run here; that limitation is recorded in TEST-RESULTS.md.

Best regards,
Baris Beydogan
Ordrivo
