4070 ModelBuilder flow has cycle

Meaning

The processing stage did not complete or did not produce a usable result: modelbuilder flow has cycle.

Common Causes

• Input quality, overlap, initial conditions, or thresholds are insufficient for the algorithm.
• A more specific input, data, environment, matching, convergence, or output error occurred earlier.

Resolution Steps

1. Check and resolve the first more specific error in the same task log.
2. Verify input quality and use default parameters on a small representative sample.
3. If the failure remains, provide the processing log, parameters, input statistics, and minimal sample to support.

When to Contact Technical Support

If the issue remains after these steps, or an internal error is reproducible after one safe retry, record the complete message and follow Contact Technical Support.