MM KS wrote:
I entered the value manually at header level
Does it mean, you have entered the condition type manually ?
If you enter the condition type manually, then it will show you origin C - Manually entered in header level and D - Header condition in item level.
If you enter only an amount for a condition type, then it will not consider that the condition type was entered manually.
I've tested that, just enter the condition type manually as below:
And then check the origin of this condition type. It will show C - Manually entered.