How To Fix DMCLG261 - &1: Access plan could not be calculated, delimitation is not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 261

• Message text: &1: Access plan could not be calculated, delimitation is not possible

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message DMCLG261 - &1: Access plan could not be calculated, delimitation is not possible ?

  The SAP error message DMCLG261 typically indicates that there is an issue with the access plan calculation for a data model or a query. This error can occur in various contexts, such as when working with SAP BW (Business Warehouse) or SAP HANA, and it usually relates to the inability of the system to determine how to access the data due to certain constraints or issues in the data model.
  Causes:
  
  Data Model Issues: There may be inconsistencies or errors in the data model, such as missing or incorrect relationships between data objects.
  Query Design Problems: The query may be designed in a way that does not allow for a valid access plan to be generated, possibly due to complex joins or filters.
  Performance Issues: If the system is under heavy load or if there are performance bottlenecks, it may struggle to calculate the access plan.
  Missing Authorizations: The user executing the query may not have the necessary authorizations to access certain data objects.
  Data Source Configuration: Issues with the configuration of the data source or InfoProvider can also lead to this error.
  
  Solutions:
  
  Check Data Model: Review the data model for any inconsistencies or errors. Ensure that all necessary relationships and attributes are correctly defined.
  Simplify Queries: If possible, simplify the query by reducing the number of joins or filters to see if that resolves the issue.
  Performance Monitoring: Monitor system performance and check for any bottlenecks. If the system is under heavy load, consider running the query during off-peak hours.
  Review Authorizations: Ensure that the user has the necessary authorizations to access all relevant data objects.
  Rebuild Access Plan: In some cases, it may be necessary to rebuild the access plan or refresh the data model. This can often be done through transaction codes like RSA1 (for BW) or using the appropriate tools in HANA.
  Check for Updates: Ensure that your SAP system is up to date with the latest patches and updates, as this can sometimes resolve underlying issues.
  
  Related Information:
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message. SAP Notes often provide detailed troubleshooting steps and solutions.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench) for BW or HANA Studio for HANA-related issues.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can provide insights or solutions.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or BW/HANA team for further investigation.