Problem with Account determination

Hi all.

I have a problem with account determination when I change some data in Tcode VKOA.

For example:

I made changes in VKOA to determine G/L account 0000523201 and it worked it.

But in the account document the account that is displayed is different (0000501000) and I don´t know why.

I checked the Analysis Account Determination in VF03 and the system found the correct account in the access sequence, but I realized that there is a second line with the message G/L account in document 0000501000 . Where do I determine this account, or how Can I fix it ?

Thanks for any help.

Renato