A1605: Invalid label name: <LabelName>

[ERROR]

The character detected at the beginning of a label is not valid. The following characters are allowed at the beginning of a label:

• All alphabetical characters ('a'.. 'z', 'A', 'Z').
• `.'and `_'.

<LabelName> is the label name detected.

  #label:    DS.B 1

  

Replace the specified character by a `.'or a `_'

  _label:    DS.B 1