Poting Service credit memo problem?

Hi All,
When we post a service credit memo , we a have an issue related to customer balance . the original amount in Service credit memo is 6000, What is posted is 6000 in general account but 400 in Customer ledger entries.

Detailed Cust. Ledg. Entries


Posting Date

Document Type

Document No.

Customer No.

Debit Amount

Credit Amount

02/06/2014

Invoice

NFS-14-1455

CL11335

400,00

0,00

01/07/2014

Credit Memo

AVSE-0150

CL11335

0,00

6 000,00

01/07/2014

Credit Memo

AVSE-0150

CL11335

0,00

400,00

01/07/2014

Credit Memo

AVSE-0150

CL11335

400,00

0,00


Posting Date



Document Type



Document No.



Customer No.



Debit Amount



Credit Amount



02/06/2014



Invoice



NFS-14-1455



CL11335



400,00



0,00



01/07/2014



Credit Memo



AVSE-0150



CL11335



0,00



6 000,00



01/07/2014



Credit Memo



AVSE-0150



CL11335



0,00



400,00



01/07/2014



Credit Memo



AVSE-0150



CL11335



400,00



0,00

hi,

please describe in detail how you got this result.

did you create a invoice first or a credit memo?
check the customer ledger entries before posting.

regards

The invoice is first and that was nothing on customer ledger entries before posting