Solution : https://service.sap.com/sap/support/notes/873977 (SAP Service marketplace login required)
Key words :
menu path 'extras -> availability control -> reference', 'extras -> availability control -> availability control info', higher-level top wbs element, higher-level wbs elements, lower-level wbs elements, desired account assignment object, account assignment element assigned, account assignment element determined, lower-level orders, higher wbs element
Related Notes :
| 1414563 | Different assigned values in availability ctrl and reporting |
| 947069 | Availability control if budgets or releases are changed |