We have a priority 1 ATC check error 'Customizing include enhancing a structure included in an artifact having a proxy object' during S/4 HANA 1809 conversion. The error message is displayed because CI_COBL structure is included in BSEG table with customer specific fields. CI_COBL was used in MSEG table as well and the same error message got cleared after creating an extension view on NSDM_E_MSEG with the custom fields. For BSEG there is no proxy object assigned which can be enhanced.
Anyone else faced same issue and what is the solution for this?