How To Fix CNV20201066 - Overlap of N rule &1 and R rule &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV20201 -

• Message number: 066

• Message text: Overlap of N rule &1 and R rule &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV20201066 - Overlap of N rule &1 and R rule &2 ?

  The SAP error message CNV20201066 indicates that there is an overlap between two rules in the context of data conversion or migration, specifically between an "N rule" and an "R rule." This error typically arises during the execution of a data migration project, particularly when using SAP's tools for data conversion, such as the SAP S/4HANA Migration Cockpit or other data migration tools.
  Cause:
  The error occurs when:
  
  There are two rules defined for data conversion that overlap in terms of the data they are supposed to handle. 
  An "N rule" (which usually refers to a rule that handles a specific set of data) and an "R rule" (which may refer to a rule that handles a different set of data) are defined in such a way that they cover the same data range or criteria.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the Rules: Check the definitions of both the N rule and the R rule. Look for any overlapping conditions or ranges that might be causing the conflict.
  
  
  Adjust the Rules: Modify one or both of the rules to ensure that they do not overlap. This may involve:
  
  Changing the criteria for one of the rules.
  Splitting the rules into more specific conditions to avoid overlap.
  Removing or consolidating rules if they are redundant.
  
  
  
  Test the Changes: After making adjustments, re-run the data migration process to see if the error persists.
  
  
  Consult Documentation: Refer to SAP documentation or guides related to the specific data migration tool you are using for additional insights on how to define rules correctly.
  
  
  Seek Support: If you are unable to resolve the issue, consider reaching out to SAP support or consulting with a professional who specializes in SAP data migration.
  
  
  Related Information:
  
  Data Migration Tools: Familiarize yourself with the specific data migration tools and their functionalities, as they may have specific requirements for rule definitions.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By carefully reviewing and adjusting the conflicting rules, you should be able to resolve the CNV20201066 error and proceed with your data migration successfully.