Sorry, honestly the question is not clear to me.
When i upload the Cost Center while Creating New Sub Asset Number with AS11,we create a LSMW for tcode KS02.
What you are doing here? Are you creating a sub-asset? or Creating a Cost Center in LSMW?
Apologies, you need to much clear.
For those entries it is taking 4503501 instead of 4501090.
What are these numbers you are referring to? Whee it is taking? Is this data entered in the file?
If you can brief your problem with detailed explains and probably, with screen shots, may be members would be able to help you.