Solution : https://service.sap.com/sap/support/notes/1464567 (SAP Service marketplace login required)
Key words :
abap sap central services, terms system landscape directory, sap kernel version, sap kernel version 7, data source sld, missing ascs instance, abap system, landscape fetch, ascs instance, system number
Related Notes :
1475046 | solman_setup: Generated RFC from HA systems is incorrect |
1419603 | Missing ABAP central service instance (ASCS) in SLD |