Prerequisites
Before working with forecasts, you must complete the following steps:
- Verify that the accounts included in the forecast have a start and an end date in the Cost Code Schedule table (F51901). Note: If an account does not have a planned start date or actual start date, the system uses the build date from the Forecast Header table (F5101) as the forecast start date.
- Verify that the accounts included in the forecast have budget amounts. 
- Set up revenue and cost automatic accounting instructions (AAIs) for base company and job company. Revenue accounts include the account range of JCCA01 – JCCA02. Cost accounts include the account range of JCST01 – JCST02. 
- For a summary forecast, set the processing options in the Create Summary Forecast program (R5112). 
- For a detail forecast, set the processing options the Create Detail Forecast program (R5111).