SAP Message WB2B217 - Error when accessing an internal table

Diagnosis
During processing of trading contract &V1&, an error occurred wheninternal table &V2& was accessed.

System Response
INCLUDE ISR_STOP

Procedure
INCLUDE ISR_VERWALTUNG

Procedure for System Administration
An internal error occurred in function module &V4&. Internal table &V2&was accessed with the following value: &V3&.