A4000: Recursive definition of label <Label name>="">

[ERROR]

Description

The definition of an EQU label depends directly or indirectly on itself.

Example
          XDEF  tigger

  
  pooh:   EQU tigger - 2

  
  tigger: EQU 2*pooh

  
Tips

This error usually indicates an error in some definitions. Determine the labels involved in the recursive definition and eliminate the circular dependency.