# \[Solved\] Why does increasing the size of parts lead to an error?

**URL:** <https://prepomax.discourse.group/t/solved-why-does-increasing-the-size-of-parts-lead-to-an-error/3218>\
**Category:** General Questions\
**Created:** [January 23, 2026, 5:09pm UTC](https://prepomax.discourse.group/t/solved-why-does-increasing-the-size-of-parts-lead-to-an-error/3218 "2026-01-23T17:09:27Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\
**Post date:** [January 23, 2026, 5:30pm UTC](https://prepomax.discourse.group/t/solved-why-does-increasing-the-size-of-parts-lead-to-an-error/3218/2 "2026-01-23T17:30:03Z")

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> [@CosmoKramer](#):
>
> I get “Failed with results”

If you scroll higher in the job monitor, you will see more specific error messages:

```auto
 *ERROR in cascade: zero coefficient on the
        dependent side of an equation
        dependent node: 17543 direction: 0

 new coefficient = 1.000000e-05
 *ERROR in cascade: zero coefficient on the
        dependent side of an equation
        dependent node: 111 direction: 0

 new coefficient = 1.000000e-05
 *ERROR in cascade: zero coefficient on the
        dependent side of an equation
        dependent node: 113 direction: 0

 new coefficient = 1.000000e-05
 *ERROR in cascade: zero coefficient on the
        dependent side of an equation
        dependent node: 114 direction: 0

```

Use Tools → Find to locate these nodes. They are all located in this region:

 ![image](https://global.discourse-cdn.com/free1/uploads/prepomax/original/2X/a/ae58eb467d32fd4ee0a6300ea39f420264f663b8.png)

So you should check the tie constraints there and look for an overconstraint - multiple tie constraints using the same surfaces in a conflicting manner.

In this case, it’s “Solid\_part-1\_to\_Solid\_part-7” and “Solid\_part-7\_to\_Solid\_part-2”. The same face is used once as master and once as slave. You can try this to get rid of the errors:

 ![image](https://global.discourse-cdn.com/free1/uploads/prepomax/original/2X/7/7200420af8dedb1132111f265755fdac1818ae05.png)

But (especially when using the Search contact pairs tool), you should check all the tie constraints for such conflicts and modify them if needed. It’s also recommended to always run a frequency step to check the connections in assembly models. And read all the warnings in the job monitor.

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