The value for '&1 &2' cannot be calculated

What causes this issue?

Errors have occurred during calculation of structure element '&V1& &V2&
'. The following errors are possible:
Division by 0
An overflow
The following messages list the operands and the internal values used in
the calculation.

System Response

The entries cannot be processed.

How to fix this error?

Check the entries.
If you can ignore the division by 0 or other errors in calculations, you
should check the formula definitions in Query Designer or adjust the
formulas with data function NDIV0 or NOERR.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.