Injection sequence is not in order

Keep getting this error.
```
Error in correctDrift(peakTable = batchB$peakTable, sampleGroups = batchB$meta$Samples,  : 
  injection sequence is not in order
Please resort peakTable, injections and sampleGroups accordingly

```
Classes for meta data are correct when compared to the sample data so not sure what's wrong?
Cheers