Solution : https://service.sap.com/sap/support/notes/1138147 (SAP Service marketplace login required)
Key words :
numerous inheritance relationships, relationships tab page, prerequisites reasonthis problem, ensure correct sorting, attached correction instructions, correction instructions, sorting function, actual sorting, symptom component, product safetymodule
Related Notes :
| 941464 | Additional information about inheritance |
| 588709 | Runtimes too long in the Relationship tab index |