If you execute a report request in the online FOCUS environment and receive an error, you can view a detailed explanation of the error, along with a possible solution by typing ? and the error number at the prompt.
For example, if you receive the error message:
(FOC003) THE FIELDNAME IS NOT RECOGNIZED
AC:NAME REPLY:
Type ? 003 after the prompt and press the ENTER key to view the following explanation:
A WORD WHICH IS ASSUMED TO BE THE NAME OF A DATA FIELD DOES NOT APPEAR ON A LIST OF NAMES OR ALIASES FOR THE FILE. CHECK THE SPELLING OF THE FIELDNAME.