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Received the following message when printing to a Monarch 9445, 9425, or 9474.

Invalid Bar Code Field


This is ONE possible solution:
The preceding printers support the following bar code line widths:

  • Use Line width 1, 2, or 3 for Code 39, Code 128, I2of5
  • Use Line width 4 for Code 39, I2of5

In Loftware Design Mode:

  • Select the field, view the Line Width settings in the Properties Box.

Article Number



 All versions of Loftware


All supported installation environments.