Difference between Ord.Dep'n-Planned and Posted

Hi Experts,

Great day!

I would like to inquire if you have encountered different Dep'n displayed in AW01N (Asset Explorer) and posted in books.

For example:

AW01N dep'n for period 9: 179.29

Correct depn' for period 9: 178.57

What is the common reason why they differ?

To guide you here are the following relevant information:

Dep'n Key: LINK

Period control: 02/02/02/02

Base method: 0007

Any help is very appreciated.

Thank you!