https://userapps.support.sap.com/sap/support/knowledge/en/3416247
3416247 - /RTCART/P_CUBE_XXXXXXXXXXX" does not exist or is not active | SAP Knowledge Base Article
During upgrade of SAP S/4HANA from 1610 to higher version, there is an error in the Phase: ACT_UPG with DDIC activations. A3 EDDLS 030XActivate DDL source...