A13203: Not a HC08 instruction or directive

[ERROR]

The identifier detected in an assembly line instruction part is neither an assembly directive, nor an HC08 instruction, nor a user defined macro.

  CodeSec: SECTION
    ...

     LDAA #$5510
  

• Change the identifier to an assembly directive, an HC08 instruction, or the name of a user defined macros.
• If you are using a directive: make sure that there is at least one space in front of the directive.