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When you try to add allocation forms to some cut, you cannot do it and get the message:

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Or (for already normalized forms):

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Reason

Cuts, not belonging to the "Base Cuts" category, usually have a limited set of parameters. For some of them, the  Goodwind  cut engine is applied which extends the set of parameters - adds slopes. Thus, you can control more parameters for these cuts. 

There are some limitations to such cuts:

• "4+ facets" limitation:

  • "4+" facet is a facet with 4 or more vertexes (junctions are the most common reason for the triangle facets to become "4+").
    

  • Goodwin checks every vertex of the model.
    

  • At each vertex, only 3 or fewer "4+" facets should converge

  Goodwin only accepts when 3 (or less) facets with 4 (or more) vertexes converge at one vertex - more than 3 facets of such type are not accepted

  • .
    

    Note
    Table, culet, and facets of the girdle are not taken into account.

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  Note Facets with 3 vertexes do not cause limitations

  • See the Example below.

    
    

• Facet types should be correct should not have serious errors (like some of the facets on the pavilion marked as the crown facets).

How to solve

1. To solve the 4+ vertexes problem, try running Smart Normalize. If this does not help:
2. Check facet types of your model.

Example

Here is an example:

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