There is bulk billing sitting in the manual batching area only, but it should have been online bulk billing.
This can happen if you accidentally tick Manual when billing, or if the patient did not meet the minimum requirements at the time of billing (i.e. valid name + DOB + Medicare card / DVA card details).
For a few bulk bills it's relatively simple to just correct out and rebill.
If you have a lot though there is a tool below which can set all unbatched bulk bills with a service date less than 2 years old.
Download, unzip, and run the following:
Note that this tool will not check the validity of each patient. It will be up to the person doing the batching to ensure that they have valid Medicare card / DVA card details, and any other issue with the billing that may cause Medicare Online batching errors. In that case the user would need to correct and rebill.