SAP Message /SAPPCE/PNV016 - Cost element &1 must have positive value, since cost element category &2

Diagnosis The cost element &V1& has a negative value. As this cost element is fromcost element category &V2&, you must transfer a positive value. The SAP System requires a positive input value so it can make a negativeposting on the credit-side. Procedure Transfer a positive amount for cost element &V1&.