Display financial transaction doc. dump program

[trongnghiabui9668]

When i display a financial transaction with tcode: FTR_EDIT, tcode will dump with error: "Exception condition "CONDLINK_INVALID" triggered".  I was debugded code and check it when i run to this code data condkey will have (17, 18) => it will occur dump. The transaction doc, i had reversed and I also reversed cash flow of it.

More infomation: 
At present with, I press button change, display, settle  => dump

Please help me.

This is history of my transaction