Solution : https://service.sap.com/sap/support/notes/397243 (SAP Service marketplace login required)
Key words : 
incomplete update --> debugging 191074 overhead a-z1, 37624 creating status-dependent job chains 69976 ga750, background processing 71551 installing advance corrections, choosing menu 'goto -> related notes', actl cycles 206908 error message kw673, wbs elements missing 85783 cumulative allocation, transaction ksa3 393580 advice note, transfer prices 389274 termination compute_bcd_overflow, splitting fixed - variable 196276 allocation, planned costs splitting 303028 change
Related Notes : 
       
| 536496 | Composite SAP note on period-end closing (general) | 
| 494487 | Project System: Consulting notes | 
| 432127 | KSS2: Cost element group in target cost version | 
| 397799 | INFORMATION: CO-OM-OPA (Order & Project Accounting) | 
| 397245 | INFO: CO-OM (overhead cost controlling) | 
| 396626 | ALLOCATION: Transaction access takes too long | 
| 393580 | Consulting note: Error message CK687 in the costing | 
| 389274 | Termination COMPUTE_BCD_OVERFLOW in Transaction KSA3 | 
| 387023 | ALLOCATION: Short dump in case of transfer prices | 
| 376084 | Migration: Revaluation with allocation cost element | 
| 370071 | ALLOCATION: Functional area is not filled | 
| 361250 | ALLOCATION: old variants lead to termination | 
| 359827 | ALLOCATION: Actual assessmt/distrib by planned vals | 
| 339238 | Allocation: segment rebooking is not possible | 
| 318743 | ALLOCATION: Correcting incorrect units of measure | 
| 304432 | SAPSQL_ARRAY_INSERT_DUPREC w/actual price calcultn | 
| 303028 | Change of reports for the accrual calculation | 
| 206908 | Error message KW673 for planned costs splitting | 
| 203330 | Allocation: Segmnt reversl only works f.actl cycles | 
| 196276 | ALLOCATION: Plan reversal as a batch job | 
| 192107 | Costs: Splitting fixed - variable | 
| 191074 | Overhead A-Z1 in KONH: Validity up to year 2000 | 
| 186352 | ALLOCATION: Incomplete update --> debugging | 
| 134493 | Segment rebook finds no sender | 
| 130350 | ALLOCATION: Info for collective execution of cycles | 
| 116318 | ALLOCATION: Authorizations for cycles | 
| 106949 | Maintenance of overheads, dependencies, conditions | 
| 105783 | F1206 and F1202 for reconciliation posting | 
| 93453 | Orders, WBS elements missing in cycle maintenance | 
| 85783 | Cumulative allocation: Consulting notes | 
| 81263 | Cycle maintenance: orders, WBS elements missing | 
| 71551 | Implementing advance corrections in the allocation processor | 
| 70094 | ALLOCATION: lock problem during background processing | 
| 69976 | GA750 "No update was made" | 
| 37624 | Creating status-dependent job chains |