How To Fix CNV_20700086 - Old and new material number are same &1 => &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_20700 - Material number conversion

• Message number: 086

• Message text: Old and new material number are same &1 => &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_20700086 - Old and new material number are same &1 => &2 ?

  The SAP error message CNV_20700086 indicates that there is an issue with the material number during a data migration or conversion process. Specifically, the error states that the old and new material numbers are the same, which is not allowed in the context of the operation being performed.
  Cause:
  This error typically occurs in scenarios where:
  
  A data migration or conversion process is attempting to change a material number, but the new material number provided is identical to the old material number.
  The system expects a change in the material number, but the input data does not reflect that change.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Input Data: Review the data being processed to ensure that the new material number is indeed different from the old material number. If they are the same, you need to provide a valid new material number.
  
  
  Data Mapping: If you are using a mapping file or tool for the migration, ensure that the mapping is correctly set up to reflect the intended changes in material numbers.
  
  
  Review Migration Logic: If you are using a custom program or logic for the migration, check the code to ensure that it correctly handles the assignment of new material numbers.
  
  
  Consult Documentation: Refer to the SAP documentation or notes related to the specific migration or conversion process you are using. There may be specific guidelines or requirements for handling material numbers.
  
  
  Testing: After making the necessary changes, perform a test run of the migration process to ensure that the error does not occur again.
  
  
  Seek Help: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with an SAP expert who can provide further assistance.
  
  
  Related Information:
  
  Transaction Codes: Depending on the context of the error, you may be using transaction codes related to data migration, such as LSMW (Legacy System Migration Workbench) or other data transfer tools.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on material number handling during migrations.
  Material Master Data: Familiarize yourself with the structure and requirements of material master data in SAP, as this will help in understanding the implications of material number changes.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.