The proposed ESCAPE character is invalid because it is not a valid string character.
#2054 Compile-time error
The proposed ESCAPE character is invalid because it is not a valid string character.
Additional Information
The invalid character's decimal code is 'X'.
Recovery
Compilation continues but no compiled source code file will be saved.
Explanation
Not all characters in a given system's character set may appear inside
a string. This message is given when a '%...#' format item is used to
describe an escape that can never be expressed directly, such
as escape %255#.