Message type: E = Error
Message class:  AQV - Message texts for SAP Query 
Message number: 187
Message text: A selection criterion with this name has already been defined
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The SAP error message AQV187, which states "A selection criterion with this name has already been defined," typically occurs in the context of creating or modifying selection criteria in SAP Query or similar reporting tools. This error indicates that you are trying to create a selection criterion with a name that already exists in the system.
Cause: Duplicate Name: The most common cause is that you are attempting to define a selection criterion (like a field or parameter) with a name that is already in use within the same query or report. System Limitations: Some versions of SAP may have restrictions on naming conventions or the number of selection criteria that can be defined.
Solution: Rename the Selection Criterion: The simplest solution is to choose a different name for the selection criterion you are trying to create. Ensure that the new name is unique within the context of the query or report. Check Existing Criteria: Review
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