How To Fix BRAIN123 - Query &1/&2 may not have read mode 'A'

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAIN -

• Message number: 123

• Message text: Query &1/&2 may not have read mode 'A'

What causes this issue?

Query &V1&/&V2& is used for the parameterization of another query with a
variable with 'Replacement from Query'. Read mode 'A' (Read all data at
once) is not permitted for this kind of 'V query'.

System Response

The query cannot be executed.

How to fix this error?

Use RSRT -> Properties to change the read mode from &v1&/&v2& to'X' or
'H'.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BRAIN123 - Query &1/&2 may not have read mode 'A' ?

  The SAP error message BRAIN123 indicates that a query (specifically a BEx query) is attempting to use a read mode that is not allowed. The read mode 'A' refers to "All" mode, which is typically not permitted for certain types of queries, especially those that are designed to work with specific data selections or aggregations.
  Cause:
  
  Query Configuration: The query may be configured to use a read mode that is not compatible with its settings. For example, if the query is designed to return specific data based on certain filters or characteristics, it may not support the 'A' mode.
  Data Source Restrictions: The underlying data source (like an InfoProvider) may have restrictions that prevent the use of read mode 'A'.
  Query Properties: The properties of the query might be set in such a way that they do not allow for the 'A' read mode.
  
  Solution:
  
  Check Query Properties: Open the query in the BEx Query Designer and check the properties. Look for the "Read Mode" settings and ensure that it is set to a mode that is compatible with the query's design.
  Modify the Query: If the query is intended to be used in a way that requires read mode 'A', consider modifying the query to allow for this mode. This may involve changing the structure of the query or the InfoProvider it is based on.
  Consult Documentation: Review SAP documentation or help resources related to BEx queries and read modes to understand the limitations and configurations better.
  Test with Different Read Modes: If possible, test the query with different read modes (like 'D' for "Data" or 'S' for "Single") to see if it functions correctly without the error.
  
  Related Information:
  
  BEx Query Designer: This is the tool used to create and modify BEx queries. Familiarity with its features and settings is essential for troubleshooting issues like this.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. Sometimes, specific versions of SAP BW or BEx may have bugs that are documented in SAP Notes.
  User Forums and Communities: Engaging with SAP community forums can provide insights from other users who may have encountered and resolved similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to reach out to your SAP support team or consult with an SAP BW expert for further assistance.