Work Order creating additional steps such as 100-B-500 etc.

Good morning.

I have created some routings which have 5 key steps to them for 5 key phases of manufacture to improve visibility.  I have made these steps standardized across routings.  The step numbers are set off by 100s so there is a step 0100, 0200, 0300, 0400 and 0500.  There are a number of possible scenarios in other optional routings which allow the use of optional subcontractors when necessary, but I am not using those in my prototype.  There are some indented bills that are used for the main item in the work order and I am allowing the work orders to explode.  All of the subassemblies share the same routing number.

When I create the work order, instead of seeing 5 work order steps, I see 130 steps, including the 5 basic steps, plus 5 substeps for each main step also numbered 0100, 0200, 0300, 0400 and 0500, as well as some repeating letters of the alphabet.

For example if Fabrication is step 100 and Surface Treatment is step 200 and Assembly is step 300 I will have a Fabrication substep for Fabrication as well as a Surface Treatment and Assembly substep.  In addition for some of these scenarios there will be multiple letters of the alphabet between substeps so that I may have

  • 0100-A-0100
  • 0100-A-0200
  • 0300-A-0100
  • 0300-A-0200
  • 0300-B-0100
  • 0300-B-0200

etc. that appear in the Operations Tab when I create the work order while I am expecting to only have

  • 0100
  • 0200
  • 0300
  • 0400
  • 0500

Does anyone know why these other steps are being created and how I can eliminate them so that only the key steps appear in the work order?

Thanks in advance.

Mike