SAP ABAP Message Class AQ Message Number 511 (The index & is only assigned once)
Hierarchy
SAP_BASIS (Software Component) SAP Basis Component
   BC-SRV-QUE (Application Component) SAP Query
     SQUE (Package) Application Development R/3 SAP Query
Attribute
Message class AQ  
Short Description Message texts for SAP Query    
Message Number 511  
Documentation status       Space: object requires documentation
Authorization check Error Message      
Changed On 20090618   
Message Text
The index & is only assigned once
Help Document

Diagnosis

So far, you have assigned an index to define an equality relationship between two fields only once. When you leave this screen, these indexes are reset.

System Response

Procedure

History
Last changed on/by 20140121  SAP 
SAP Release Created in