SAP Message R11287 - Printer &1 already exists

Diagnosis
You have created a data record with a printer destination that isalready contained in another data record of the same communicationtype.
This means that it is not possible to unambiguously identify this datarecord via the printer destination.

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