The Service Items in the SIM library must have the proper revenue codes set up for recurring billing.
 
 
  - In File Maintenance, select Libraries and then Service Items .
 
  - Select the applicable library from the list.
 
  - Enter the service item number in the Search field.
   
    The Service Item Library Maintenance window opens.
   
 
  - Enter the Service Item number that you want to use for recurring billing in the Search field.
   
 
  - Select the applicable revenue code in the Revenue Code field.
   
    The revenue code must be a valid code for recurring billing. Refer to Setting Up Revenue Codes in this section for a list of valid codes.
   
 
  - Select OK.