Solution : https://service.sap.com/sap/support/notes/1171263 (SAP Service marketplace login required)
Summary : 
      When posting a goods issue for a handling unit in an SAP EWM system, errors might occur if the handling unit, previously utilized in a complete life cycle, is processed again which leads to the HUSELECT 008 error message indicating duplication. This problem stems from a programming error potentially triggered post-implementation of Note 1082002. The corrective action involves applying specific source code adjustments detailed in the correction instructions to resolve the issue.
Key words : 
source code corrections contained, terms extended warehouse management, extended warehouse management, complete life cycle, goods issue exists, goods issue posting, handling unit &1 posted, relevant handling unit, goods issue, handling unit
Related Notes : 
       
| 1419577 | Runtime error GETWA_NOT_ASSIGNED in the program SAPLV50S | 
| 1082002 | HUSELECT 008 during confirmation for goods issue |