In the below code, records is always 0 even though the data are written out to the database successfully.

{{
public async Task<IEnumerable<Guid>> SaveTestData(IEnumerable<TestData> data)

{   _dbContext.TestData.AddRange(data);   var records = await _dbContext.SaveChangesAsync();   if (records > 0)     return data.Select(x => x.Id);   return Array.Empty<Guid>(); }

}}

Same is true for the sync SaveChanges() method. This makes basic logic for checking for success/failure impossible so this should be considered high priority.