3433433 - Business system ID is missing or cannot be determined - Business Partner Replication via Web Service

A Business Partner replication via Web Service fails in the outbound system with the following messages:

• An exception was raised.
• Error occurred when sending a message.
• Error during outbound mapping; processing not possible.
• Error during key mapping: BUSINESS_SYSTEM_MISSING Business system ID is missing.
• Objects with errors were stored. Repeat replication for those objects.

Or the inbound message fails with the following message:

• ID of the local system cannot be determined

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• Sales And Distribution (SD)
• Logistics Execution (LE)
• SAP ERP Central Component
• SAP ERP
• SAP Enhancement package for SAP ERP
• SAP Enhancement package for SAP ERP, version for SAP HANA
• SAP S/4HANA

SAP ERP Central Component all versions ; SAP ERP all versions ; SAP S/4HANA all versions ; SAP enhancement package for SAP ERP all versions ; SAP enhancement package for SAP ERP, version for SAP HANA all versions

S4, S4H, S/4HANA, ECC, MDG, REPLICATION, CFIN, C4C, BP, BUSINESS PARTNER, PARTNERS, BPS, An exception was raised, Error occurred when sending a message, Error during outbound mapping; processing not possible, Error during key mapping: BUSINESS_SYSTEM_MISSING Business system ID is missing, Objects with errors were stored. Repeat replication for those objects, replication, DRFOUT, SLD, BADI, SOAMANAGER, local, system, cannot, cant, can not, can't, determined, 004, MDG_BS_BP_DATAREPL, 004(MDG_BS_BP_DATAREPL), MDG_BS_BP_DATAREPL004, 004MDG_BS_BP_DATAREPL,BP_DATAREPL_FND005 , KBA , LO-MD-BP-WS , Web Service for Business Partner , Problem