Description

In CDS 10 the locale_fallback compat flag is removed. Projects that had set cds.features.locale_fallback: true to enable the locale fallback chain (e.g. de_CH → de → default) will now always use that behaviour — it is the permanent default. The flag has no effect when set and should be removed. Projects that had not opted in see no change in behaviour.

How to Check

• [ ] Search for cds.features.locale_fallback in package.json, .cdsrc.json, and environment-specific config files.
• [ ] If the flag is present with value true, remove it and verify that locale-aware queries still return the expected translations.

Migration Steps

1. Remove the flag from CDS configuration:

   // package.json or .cdsrc.json
     "cds": {
       "features": {
   -     "locale_fallback": true
       }
     }

2. Run integration tests that exercise locale-specific data retrieval to confirm fallback behaviour is unchanged.