Considerations for running business rules offline:
Business rule calculations can use only data and objects taken offline; rules do not have access to data or objects stored on the server.
Runtime prompts are not supported for business rules with the Run on Load property set.
Business rules set to Run on Save that require user input for a runtime prompt are not supported when synchronizing back to the server.
The Run on Load and Run on Save options can use only business rules and dependent data available offline.