Diagnosis
You have maintained data for a variable-size item. If no formula isentered, the entered sizes are multiplied together.
In this case, multiplication of the appropriate size unit or itsdimension has produced a dimension which is not supported.
Example: size unit M (meter)
The dimension of the unit M is LENGTH.
The dimension LENGTH is defined as follows by entering an exponent forthe base dimension of the SI-system:
Dimens. Lngth
LENGTH 1
Multiplication produces the following result:
? 2
The dimension of the result is SURFAC (area).
This connection also applies if the size and its size units aremultiplied together.
M * M --> QM
Length (LENGTH) * Length --> Area (SURFAC)

Procedure
Check the number of sizes or the size units you entered and correctthem if appropriate.