Why Amount is 0 in customer ledger entries but it has value in general ledger

Hi guys i have proplem

i have more entries in my dynamic nav 2009 r2 and some entries have 0 amount in customer ledger entries

and not any entries relation in details customer ledger entries

why this problem happen and how i solve

screen shoot as below :

 so that why amount in customer ledger entries is 0 and no detail ledger entries although

amount in g/l entry is 200000

if possible help me

thanks