Solution : https://service.sap.com/sap/support/notes/217012 (SAP Service marketplace login required)
Summary : 
      After a system upgrade or client copy, issues like missing SAP standard Customizing entries for pricing and condition technique emerge. This affects functions such as 'Down Payment Clearing', with condition types like AZWR not displaying in transaction V/06. Simultaneously, customer adjustments to Customizing entries revert to their default state post-upgrade, exemplified by access sequence PR00 resetting post-upgrade from Release 3.X. Given each table’s association with a specific delivery class affecting data transfer behavior during system changes, anomalies are observed, necessitating manual checks and potentially consulting SAP Support if such issues persist, particularly for tables categorized under delivery classes that have restricted transport or editing capabilities.
Key words : 
error message vt 520 'condition type xxxx, ct684       condition exclusion groups                     ct684g       cond, et683        pricing procedures                                      ct683s       pricing procedures, table       short text                                  delivery classt681       conditions, procedure assignment   ct684t       condition exclusion, standard condition type azwr set, language importthe system behavior differs, condition types                  ct684s       condition exclusion, condition type/access                       ct682z       conditions, 'bc manual client copy' documentation
Related Notes : 
       
| 746609 | INFO: => LE-TRA-FC-MD (Master data) | 
| 746607 | INFO: => LE-TRA-FC-IMG (Customizing) | 
| 597866 | Customizing for "Packing according to packing instructions" | 
| 166395 | Customizing setting for cash on delivery | 
| 91096 | Table Compare: Info about Cust. Cross System Check | 
| 2857 | What table delivery classes are there? What is their signifi |