How To Fix AQ594 - Select two different tables

SAP Error Message - Details

• Message type: E = Error

• Message class: AQ - Message texts for SAP Query

• Message number: 594

• Message text: Select two different tables

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message AQ594 - Select two different tables ?

  The SAP error message AQ594, which states "Select two different tables," typically occurs when a user attempts to perform an operation that requires the selection of two distinct database tables, but the same table has been selected twice. This error is often encountered in scenarios involving joins or comparisons between tables in queries or reports.
  Cause:
  
  Duplicate Table Selection: The most common cause of this error is that the user has inadvertently selected the same table more than once in a query or report definition.
  Incorrect Query Logic: The logic of the query may be flawed, leading to the selection of the same table for operations that require two different tables.
  User Error: The user may not be aware that they need to select two different tables for the operation they are trying to perform.
  
  Solution:
  
  Review Table Selections: Go back to the query or report definition and check the tables that have been selected. Ensure that you have selected two different tables.
  Modify the Query: If you find that the same table is selected multiple times, modify the query to include two distinct tables that are relevant to the operation you are trying to perform.
  Consult Documentation: If you are unsure about the required tables for your operation, refer to the SAP documentation or help resources related to the specific transaction or report you are working with.
  Seek Help from Colleagues or Support: If you are still having trouble, consider reaching out to colleagues who may have experience with the specific query or report, or contact SAP support for assistance.
  
  Related Information:
  
  SAP Documentation: Check the official SAP Help Portal for documentation related to the specific module or transaction you are working with.
  SAP Community: Engage with the SAP Community forums where you can ask questions and share experiences with other SAP users.
  Training Resources: If you frequently encounter issues with queries and reports, consider taking training courses on SAP query tools and database management.
  
  By following these steps, you should be able to resolve the AQ594 error and successfully execute your query or report.