SAP Message R11291 - URI address &1 already exists

Diagnosis
You have created a data record with a URI address that is alreadycontained in another data record of the same communication type.
This means that it is not possible to unambiguously identify this datarecord via the URI address.

Procedure
During direct input, state the number of the data record (
CONSNUMBER) in order to unambiguously identify this data record.