Bill Date

Bill Date is a required field (valid range is BOT - EOT) when defining a Fixed Price Billing item.  The Bill Date in the FP items list determines when a given FP item is eligible to be posted for Billing.  If Bill Date is within the “Actuals Through” range of the Billing & Revenue Post process, the process will generate an UNBILLED transaction for the FP item.  You can either enter a specific date with which the item becomes eligible to be included in a post process or you can indicate that the item's eligibility is linked to the project / task date (Completed or Revised End Date) by checking the "Bill on Completion" checkbox.  

The date used when projecting future fixed price item billing eligibility will be the Project/Task's Revised Date unless a Completed date has been populated on the project/task (in which case the Completed Date will be used).  

Bill Date will be displayed in the Fixed Price Item list in a gray font when the fixed price item is linked to the task / project dates.  A dagger symbol will be displayed next to the bill date of those items that have participated in the post process.

Note that when you have a fixed price item that is either configured for Bill on Completion or have its Recognition based on % Complete, once the percent complete value has reached 100 and a Completion Date has been supplied and the item has participated in a post process (with those values), the % Complete and Completed Date fields will no longer be modifiable.