After patching 1808.2 to 1808.3 and accessing Integration UI perspective in backoffice to see the EDMX view of Integration Object you can see in log:
cannot find spring bean [integrationObjectItemPartOfAttributeHandler] configured for dynamic attribute [IntegrationObjectItemAttribute.partOf] from extension [integrationservices]
SAP Commerce 1808.3 patched from 1808.2
KBA , CEC-HCS-CCAZ-CZO , Customer Zone on Azure , CEC-COM-ODS , O-Data Services, Integration to SCPI , Bug Filed
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