SAP Message RE232 - Negative values are not possible for value adjustments

Diagnosis
You want to enter or change a value adjustment for an earmarked fundand have entered a negative amount (document currency or localcurrency).
However, it is not possible to enter a negative amount in a valueadjustment document.

Procedure
If you want to reduce the amount of an earmarked fund, you have toenter a value reduction document and enter a positive amount.