Incoming order Value type 19 KOr1

Hello All,

After planning for WBS, when i run CJA2,it  automatically shows overhead values and after saving,these are shown in RPSCO and COSB tables with Value type 19 and Business transaction KOR1.

I want to know why these are coming or is there any automatic determination while executing CJA2. As we have not Plan any overhead through CJ46 or any other Tcode.

Kindly please help .

BR

Manoj