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SkyCiv Structural 3D

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  3. Solving
  4. List of Errors

List of Errors

Below are a list of error codes and their possible causes. These errors will display in our FEA software when a user attempts to solve an unsolvable structure. Below is a table displaying the possible causes and solutions to such issues:

Error Code Message Possible Issues Possible Solutions
1 Timed Out – Server Unavailable.
  • Internet disconnected or dropped out
  • Issues connecting to SkyCiv server.
2 Timed Out – Solution took too long.
  • There is a disconnected member or node, causing the solver to fail
  • Model is too large for solver (typically > 20,000 members or > 10,000 plates)
  • Increase the solver timeout in Settings > Solve > Solver Timeout
  • Run Repair Model (Advanced > Model Repair) to locate model issues
  • Delete parts of the model and resolve to try and locate the source of the error
  • Open Datasheet for each element, and review the input for any missing/incorrect data
  • Reduce the size of your model and try to solve it again
  • Contact [email protected] if the problem persists
3 Server Error
  • Issues connecting to SkyCiv server.
101 Unauthorized Access
  • There was an issue with authorization or access
102 Please add a member
  • There are no members
103 Please add a load
  • There are no loads (forces) applied to the structure
104 Please add a support
  • There are no supports to restrain your model
105 Please add a section
  • No Section has been defined for a member
106 – 109, 116, 117 (*Attribute Name*) of Section ## cannot be zero
  • Missing data for Section Properties
  • Old Data
  • Open the Section in question and review the input, looking for missing data, 0, or incorrect input
  • Delete the Section in question and re-enter and resubmit the data
110 Structure is not constrained
  • The structure is not static
  • The structure is unrestrained in one or more degrees of freedom
  • Insufficient supports or fixities within supports
  • Add more supports and see if the structure solves. If it does, it is possible there are not enough supports to constrain the model, and it is not static.
  • Change your supports to all Fixed (FFFFFF) and see if the structure solves. If it does, it is possible there are insufficient Fixed (‘F’) degrees of freedom (add more F’s)
111 Please remove disconnected Node # x
  • Node number x is floating and not connected to anything
  • Connect a plate or member to the node – Remove the node
112 Please remove disconnected Element (Member) # x
  • Element number x is floating and not connected to the rest of your structure
  • Connect element to the rest of your structure via a node
  • Remove the element
113 Structure is not constrained
  • The structure is completely unrestrained in some translational direction (X, Y or Z)
114, 115, 118 Solve Error
  • There was an issue during solving. Could be an issue with the model or input
  • Run Repair Model (Advanced > Model Repair) to locate model issues
  • Check for any disconnected nodes, elements or plates. Inspect to ensure your entire model is connected by nodes.
  • Delete parts of the model and resolve to try and locate source of error
  • Open Datasheet for each element, and review the input for any missing/incorrect data
  • Watch the below video for 6 Tips to troubleshooting your model
119 Truss Structure not Stable
(SkyCiv Truss only)
  • The model is likely an unstable truss structure
  • Add more members or supports to stabilize the truss
  • Remember each member is pinned on the ends so the structure needs to be triangular to be stable.
202 Buckling Analysis failed to run
  • The structure may not be stable, with insufficient restraints or supports
  • Try add more restraint to your model (change member end fixities to FFFFFF)
300, 301 Non-Linear Static Analysis failed to converge
  • The structure may not be stable, with insufficient restraints or supports
  • The structure could be buckling
  • If cables exist in the model: Cables may cause the model to not converge
  • Increase convergence tolerance in Settings > Solve > Convergence Tolerance – Add more supports to your structure
  • Try to run a Linear Static + Buckling Analysis and check whether structure is buckling
  • Increase the size of the sections to determine whether structure is buckling
  • If cables exist in the model: Try these cable tips to get your model to solve.

6 Tricks or Tips to try troubleshooting your Structural Model




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