EnergySystemsModellingLab/MUSE2

Input validation does not flag negative capital/fixed/variable costs

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#1,438 opened on Jul 27, 2026

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 (2 comments) (0 reactions) (1 assignee)Rust (3 forks)auto 404
buggood first issue

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Description

Negative values for capital_cost, fixed_operating_cost and variable_operating_cost in process_parameters.csv should be flagged at the input validation stage and a clear error raised. We've currently letting these get through and potentially cause havoc down the line.

Contributor guide

Research direction
Inspect the input validation module for process parameters.csv and add a check that rejects negative values for capital cost, fixed operating cost, and variable operating cost with a clear error message.
Tech stack
rust
Domain
backenddata
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitRust
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75