G/L Entry not posting correct in TCS

I have posted one TCS entry through bank receipt vouchar but the amount posting in G/L are not correct.

Eg : Customer outstanding is : 100000.00

TCS is : 2%= 2000.00

After posting the Bank receipt G/L entry should be :

Customer : -100000.00

TCS : 2000.00

Bank : 98000.00

But currently is posting the below mentioned amount

Customer : -98000.00

TCS : -2000.00

Bank : 100000.00

what is standard entry of capturing the TDS deducted by customer in Navision.