Solution : https://service.sap.com/sap/support/notes/381115 (SAP Service marketplace login required)
Summary :
When the material ledger and price determination control 3 are active in SAP, certain business transactions including cost estimate release and price changes are restricted to specific periods to maintain data consistency. Transaction CKMM should not be used for modifying price determination settings, as this can lead to irreversible loss of price difference allocations when toggling between settings. SAP Notes 384553 and 555176 detail the constraints and alternative methods available for handling price changes when period restrictions apply.
Key words :
collected information previously disappeared, terms price determination control, price change business transactions, price determination control 3, price determination control, cost estimate release, single-/multi-level, ensure consistent data, business transactions, price change