---
title: Diagnose "More Columns Than Column Names"
---
flowchart LR
    Start(["Error fires"]) --> Q1{"Separator<br/>matches data?"}
    Q1 -->|"No"| F1["Set sep = ';'<br/>or sep = '\t'"]
    Q1 -->|"Yes"| Q2{"Trailing<br/>commas?"}
    Q2 -->|"Yes"| F2["Add col.names<br/>with dummy"]
    Q2 -->|"No"| Q3{"Stray<br/>quote chars?"}
    Q3 -->|"Yes"| F3["Set quote = ''"]
    Q3 -->|"No"| F4["Use col.names<br/>or skip rows"]
