Arpan Banerjee just send me a message that Google is deprecating Structured Data Files (SDF) versions 9, 9.1, and 9.2 on January 28, 2027.
Users should migrate to SDF v10 or later before that date using the SDF v10 Migration Guide.
After the sunset date:
Partners and advertisers still using the deprecated versions will default to v10.
API requests using SDF_VERSION_9, SDF_VERSION_9_1, or SDF_VERSION_9_2 will return a 400 error.
