Text  | 
                        
                        Invalid stack function requested.  | 
                        
                     
Explanation  | 
                        
                        See Natural Programmer"s Guide for information on available stack functions.  | 
                        
                     
Action  | 
                        
                        Correct error.  | 
                        
                     
Text  | 
                        
                        Length of data to be stacked is zero or negative.  | 
                        
                     
Explanation  | 
                        
                        The length of data to be stacked must be specified as non-zero and positive.  | 
                        
                     
Action  | 
                        
                        Check program and correct error.  | 
                        
                     
Text  | 
                        
                        Stack destroyed, command was expected.  | 
                        
                     
Explanation  | 
                        
                        Natural tried to read a command from the top of the stack, but none was found.  | 
                        
                     
Action  | 
                        
                        Check program and correct error.  | 
                        
                     
Text  | 
                        
                        Stack destroyed, data expected.  | 
                        
                     
Explanation  | 
                        
                        Natural tried to read data from the top of the stack, but no information was available (can be produced by specifying: STACK=(EX pgm:)). Data must be specified for an INPUT statement. If default data are to be passed to INPUT fields, specify data for a non-existent INPUT field. The data will be ignored in delimiter mode.  | 
                        
                     
Action  | 
                        
                        Check program and correct error.  | 
                        
                     
Text  | 
                        
                        Stack empty.  | 
                        
                     
Explanation  | 
                        
                        Natural tried to read data from the stack, but the stack was empty. Either an internal error has occurred, or the stack was destroyed.  | 
                        
                     
Action  | 
                        
                        Check program and correct error.  | 
                        
                     
Text  | 
                        
                        Stack data overflow.  | 
                        
                     
Explanation  | 
                        
                        The amount of stack data does not fit into the stack area. You can stack a maximum of 999 elements.  | 
                        
                     
Action  | 
                        
                        Check program and reduce the number or size of fields to be stacked.  | 
                        
                     
Text  | 
                        
                        Invalid UTF-16 data.  | 
                        
                     
Explanation  | 
                        
                        The data to be stacked do not represent a valid UTF-16 encoding.  | 
                        
                     
Action  | 
                        
                        Ensure that the length of the UTF-16 character string in bytes is a multiple of 2.  | 
                        
                     
Text  | 
                        
                        SET KEY error, function key bit not supplied.  | 
                        
                     
Action  | 
                        
                        Check program and correct error.  | 
                        
                     
Text  | 
                        
                        SET KEY error, function key not available.  | 
                        
                     
Explanation  | 
                        
                        The selected function key in a SET KEY statement is not defined to Natural.  | 
                        
                     
Action  | 
                        
                        Check program and correct error.  | 
                        
                     
Text  | 
                        
                        Error in SET KEY statement.  | 
                        
                     
Explanation  | 
                        
                        A variable has been specified after "SET KEY", and the variable contains an invalid value. Valid values are: "PA1" to "PA3", "PF1" to "PF24", "CLR", and "ENTR". This error may also occur if the variable contains "ENTR" but a SET KEY statement option other than the NAMED clause is applied to the key.  | 
                        
                     
Action  | 
                        
                        Correct error in program.  |