Message 10257

Available since version: 2026.2.0

ERROR 10257 - Simulation of internal nutrients not supported for mass balance outputs. Exiting.

Description

The simulation includes internal nutrient water quality variables (internal nitrogen or phosphorus quantities), which are not supported by the mass balance output. Mass balance output cannot be used when the water quality configuration contains internal nutrient parameters.

Suggestions

Remove the MassBalance output block from the control file, or use a water quality configuration that does not include internal nutrient simulation.