How To Fix SMT066 - Error on copying of &1 to &2: Data loss source = &3 target = &4

SAP Error Message - Details

• Message type: E = Error

• Message class: SMT -

• Message number: 066

• Message text: Error on copying of &1 to &2: Data loss source = &3 target = &4

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.

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message SMT066 - Error on copying of &1 to &2: Data loss source = &3 target = &4 ?

  The SAP error message SMT066 indicates that there is an issue during the data transfer process, specifically when copying data from one object to another. The message typically includes placeholders for the source and target objects, as well as information about the data loss.
  Cause:
  The error can occur due to several reasons, including:
  
  Data Structure Mismatch: The source and target objects may have different structures, leading to data that cannot be copied directly.
  Data Type Incompatibility: The data types of the fields in the source and target may not match, causing issues during the copy process.
  Missing Fields: The target object may not have all the fields present in the source object, leading to potential data loss.
  Configuration Issues: There may be configuration settings in the SAP system that prevent the successful copying of data.
  Authorization Issues: The user may not have the necessary permissions to perform the copy operation.
  
  Solution:
  To resolve the SMT066 error, you can take the following steps:
  
  Check Data Structures: Verify that the source and target objects have compatible structures. Ensure that all necessary fields are present in the target object.
  Review Data Types: Ensure that the data types of the fields in the source and target match. If there are discrepancies, you may need to adjust the target structure.
  Field Mapping: If you are using a data transfer tool or process, check the field mapping to ensure that all fields are correctly mapped from the source to the target.
  Configuration Review: Review the configuration settings related to the data transfer process. Ensure that all necessary settings are correctly configured.
  Check Authorizations: Ensure that the user performing the operation has the necessary authorizations to access both the source and target objects.
  Consult Documentation: Refer to SAP documentation or support resources for specific guidance related to the error message and the objects involved.
  
  Related Information:
  
  Transaction Codes: Depending on the context of the error, you may want to check transaction codes related to data transfer, such as LSMW (Legacy System Migration Workbench) or other data migration tools.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Consider checking SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  If the issue persists after following these steps, it may be beneficial to engage with SAP support for further assistance.