SAP Message /SAPCND/GEN_CODE211 - Syntax error - placeholder does not end with '%'

Diagnosis
A place holder was started with the character &, and incorrectlycompleted with %.

System Response
Generation is interrupted.

Procedure
A place holder may not include blanks. A place holder must also becompleted with the percentage sign in the same template row after amaximum of 30 characters.
If you use the & sign in the code to be generated, mask thiswith & directly before it.