Solution : https://service.sap.com/sap/support/notes/602769 (SAP Service marketplace login required)
Key words :
newly created user status profile, respective budget profile activation type 1, manually setting user status noac, future newly created orders, apparently inactive/ deactivated availability control, object type 'internal order', 'extras -> availability control -> activate, user status profile subsequently, business transaction 'availability control', user status profile
Related Notes :
| 1081758 | FAQ: Budget Check/Display |