How To Fix MC703 - Base table & was included more than once

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 703

• Message text: Base table & was included more than once

What causes this issue?

A base table was included more than once in a view.

System Response

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

How to fix this error?

Enter each base table only once.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC703 - Base table & was included more than once ?

  The SAP error message MC703, which states "Base table & was included more than once," typically occurs in the context of reporting or data extraction processes, particularly when working with InfoObjects or queries in SAP BW (Business Warehouse) or similar environments. This error indicates that a base table has been referenced multiple times in a way that is not allowed, leading to ambiguity in the data model.
  Cause:
  
  Duplicate Table References: The most common cause of this error is that the same base table has been included multiple times in a query or data model. This can happen if you are trying to join or relate the same table in different ways without proper differentiation.
  Incorrect Data Model Design: The data model may have been designed in a way that inadvertently includes the same table multiple times, leading to conflicts.
  Query Design Issues: If you are using a query designer, it may have inadvertently added the same base table multiple times due to user actions or misconfigurations.
  
  Solution:
  
  Review Query/Model Design: Go through the query or data model where the error is occurring. Check for any instances where the same base table is included more than once. Remove the duplicate references.
  Use Aliases: If you need to reference the same table for different purposes, consider using aliases or creating views that can differentiate the instances of the table.
  Check Joins: Ensure that the joins between tables are correctly defined and that you are not unintentionally joining the same table multiple times.
  Recreate the Query: If the issue persists, consider recreating the query from scratch to ensure that no duplicate references are included.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on how to structure queries and data models to avoid this error.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error. Sometimes, there may be known issues or fixes provided by SAP.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed. Other users may have encountered the same problem and can provide insights or solutions.
  Training and Best Practices: Consider training on best practices for data modeling and query design in SAP BW or the specific SAP module you are working with to avoid similar issues in the future.
  
  By addressing the root cause of the error and following the suggested solutions, you should be able to resolve the MC703 error effectively.