Activity-level Parameters do not work properly with parameter-scenarios

[bsteubing]

What do you want to report?

This error occurs only when Activity parameters are used with parameter scenarios. It does not occur when I model the same with database parameters.

Relevant errors

Traceback (most recent call last):
			  File "C:\Users\steub\PycharmProjects\activity-browser\activity_browser\app\pages\calculation_setup\scenario_section.py", line 329, in load_action
			    df_flow_scenarios = ss.parameters_to_sdf(df)
			                        ^^^^^^^^^^^^^^^^^^^^^^^^
			  File "C:\Users\steub\PycharmProjects\activity-browser\activity_browser\bwutils\superstructure\utils.py", line 93, in parameters_to_sdf
			    return convert_parameter_to_flow_scenarios(parameter_scenarios)
			           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
			  File "C:\Users\steub\PycharmProjects\activity-browser\activity_browser\bwutils\superstructure\convert_parameter_to_flow_scenarios.py", line 292, in convert_parameter_to_flow_scenarios
			    raise ValueError(
ValueError: No direct formula exchanges found for selected groups: 337560461447229440

Version

24 June 2026

Installation method

PyPI (pip)

Operating system

Windows 11