Impossibility to do the open transaction editing on one of my customer account

Hello all,

I am using Microsoft Dynamics AX 2009 and I have an issue with one of my customers account. When I go on this customer account name CECA GADIS, account number C00302, I can't access the open transaction editing because I have an error message that appears every time I try to open it. This error message sais "Cannot create a record in Balance (CustVendTmpOpenTransBalances). Currency: , 0,00.The record already exists.". You can see it on the 2 pictures I have shared. It is the only account that shows that error message, the others are working fine. Beside, I can access this account transactions, but it seems that only the Open  Transaction Editing causes an issue. Can someone help me with it?

https://onedrive.live.com/redir?resid=B00AB8DDD0145240!169&authkey=!AE2EfHihF00OmRc&v=3&ithint=photo%2cjpg

https://onedrive.live.com/redir?resid=B00AB8DDD0145240!170&authkey=!ACPHjAIbpCkq5DQ&v=3&ithint=photo%2cjpg

Best regards