Why is this an issue?

Declaring multiple variable on one line is difficult to read.

Noncompliant code example

Module Module1
  Public Const AAA As Integer = 5, BBB = 42, CCC As String = "foo"  ' Noncompliant
End Module

Compliant solution

Module Module1
  Public Const AAA As Integer = 5
  Public Const BBB = 42
  Public Const CCC as String = "foo"
End Module