1. SAP Business One 10.0 Help Portal: In the documentation for the "Cash Flow Forecast" window
under the "Certainty Level" field description
it is explained that the system proposes a certainty level for each transaction based on its origin. For instance
an open A/R invoice is considered more certain than a sales order. (SAP Business One 10.0 Documentation
Financials Module -> Financial Reports -> Cash Flow Forecast).
2. SAP Training Course TB1200 (SAP Business One - Logistics): Unit 8: Financials
in the section covering the Cash Flow Forecast
details how different source documents (transaction origins) like invoices
orders
and down payments are assigned different default certainty levels to reflect their varying degrees of commitment. (TB1200ENCOL10
Unit 8
Financials).