Syntax error in program "SAPLKONT"

Hello SAP Gurus,

Using CO02 Tcodes, when entered all field and Click on save button Than program falling in dump

The current ABAP program "SAPLCK21" had to be terminated because it has

come across a statement that unfortunately cannot be executed.

Because SAP Updating from Ecc 6.0 To EHP7.

So kindly Provide me OSS Notes

Thanks & Regards

Azhar Khan