Solution : https://service.sap.com/sap/support/notes/398490 (SAP Service marketplace login required)
Key words :
buffer_load_execute routine additional key words transaction, dyn_call_meth_class_not_found runtime error occurs, source codethe note adjusts, error message /sapapo/atp_bop 009 ', symptom order items, dates remain unchanged, changed individually online, initial data transfer, initial atp category, table /sapapo/ordadm_i
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| 481651 | Backorder processing: Termination due to missing category |
| 380183 | APO update without requirement-related change in R/3 |
| 375193 | Backorder processing: Composite SAP note on posting |
| 371832 | APO field catalog update w/o relevant change in R/3 |
| 370799 | APO update without requirement- related changes in R/3 |