Can't perform a upsert operation on the fields of the the Temporary Time Information entity.
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SuccessFactors BizX - all versions
It is possible to verify the entities supported operations on the OData API Data Dictionary.
On this case, the fields were not upserted because this entity does not support upsert operation as it only supports Query.
Find more information on this entity on the OData Reference guide
Temporary Time Information; OData API; Upsert; Supported Operations; OData API Data Dictionary. , KBA , LOD-SF-INT , Integrations , LOD-SF-INT-ODATA , OData API Framework , Problem