How To Fix VLBAPI051 - &1 in SENDER_METHOD field is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: VLBAPI - Output Texts for Delivery BAPIs

• Message number: 051

• Message text: &1 in SENDER_METHOD field is not allowed

What causes this issue?

For the SENDER_METHOD field, only the values <LB>Blank</> (posting of a
goods receipt) and <LB>GRPD</> (posting of a partial goods receipt) are
allowed. If you enter a different value, the processing of the IDoc is
cancelled. For more information, see the documentation for
<ds:fu.BAPI_INB_DELIVERY_CONFIRM_DEC> BAPI for Inbound Delivery
Verification from a Decentralized System</>.

System Response

The processing of the IDOC is cancelled.

How to fix this error?

Enter a valid value in the SENDER_METHOD field.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.