SAP Message /POSDW/UI_INT_ERR001 - Internal error in class &1, method &2 (see long text)

Diagnosis
An incorrect system status has occurred, which is probably due to aprogram error.

System Response
Processing cannot be continued

Procedure
Contact your system administrator

Procedure for System Administration
Make a note of the exact conditions that lead to the error. If theerror can be reproduced, contact SAP.