Article - CS327618
[Knowledge Hub] Troubleshooting the error "This variable is undefined. Check that the label is set correctly" in Mathcad Prime
Modified: 21-Nov-2025
Applies To
- Mathcad Prime 1.0 to 11.0
Description
- Troubleshooting the error: This variable is undefined. Check that the label is set correctly.
- What is the meaning of error: This variable is undefined. Check that the label is set correctly.
- What is the meaning of error (German): Diese Variable ist nicht definiert, Prüfen Sie, ob die Beschriftung richtig festgelegt ist.
- regarding a specific math label type
- when evaluating an output from programming
- when Symbolic Results are not assigned
- when opening a mcdx file converted from Mathcad 15.0 format
- f(x):=x*x=?[error message] when variable is used in a function definition
- when opening a worksheet
- when Integral symbolic resolution does not seem to check unit consistency
- while trying to use specific built-in functions such as Find, Minerr
- A previously working project has stopped to function properly
- Question mark error:
This is a printer-friendly version of Article 327618 and may be out of date. For the latest version click CS327618