In Repository explorer you have created custom BO OrganisationalCentreExtension however the same is not available in Business Configuration and Scoping. This BO scoped in SDK has Org Structure which have different roles/purposes. You need to add an extension field so we can see the role/purpose (no SAP field is relevent) and then use this for a query. Upon selecting this BO the below message displays in SDK:
In Business Configuration And Scoping we are unable to find option Extensibility For Org Units.
We do not support Extensibility on the MOM UI/BO. There are some technical limitation - like handling of time dependency for extensions.
This is expected system behavior.
KBA , AP-RC-BCT , Business Config. Tools (SAP Business ByDesign , How To