Resolve calculation errors

Use the Issues panel as your primary guide when a calculation run does not complete. Work through errors in order, re-running after each correction group.

Missing or invalid data issues

1. Review the Issues panel and identify the first blocking item.
2. Open the referenced table row or setting and correct the missing or invalid value in Data entry overview or User interface basics.
3. Re-run the calculation to confirm the issue is cleared.

Configuration conflicts

1. Confirm your selected flow type and method match your intended run.
2. Verify project-level settings such as Pipe Table and method options in User interface basics.
3. Apply updates and run the calculation again.

Convergence issues

1. If solve attempts continue without stabilizing, review the Issues panel for pressure, flow, or direction conflicts.
2. Confirm end-head requirements are realistic for the available supply and that no values are out of range.
3. Review very low-flow loop segments and restrictive conditions that can prevent stable balancing, then re-run.

Retry workflow

1. Make one correction group at a time, starting with blocking errors.
2. Re-run after each correction group to isolate what changed the result.
3. If the run still fails, use Calculation errors and warnings reference, App and session errors reference, and Data input warnings reference to match the message and apply the recommended action.