Not all futures market prices for curve &1, &2 found

What causes this issue?

The system tried to read market prices for the futures used for
commodity curve &V1&, &V2& and could not find prices for all.

System Response

The system will try to build the curve with the prices found (by
interpolating between the prices found and extrapolating beyond them).

How to fix this error?

Check the
security prices for the underlying futures and maintain them if
possible.

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.