How To Fix CP170 - External relationships cannot be copied

SAP Error Message - Details

• Message type: E = Error

• Message class: CP - Task list messages: Core data

• Message number: 170

• Message text: External relationships cannot be copied

What causes this issue?

The <GL:standard task list>standard task list</> that you want to copy,
contains relationsips to another task list.
These realtionships are not copied.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CP170 - External relationships cannot be copied ?

  The SAP error message CP170 ("External relationships cannot be copied") typically occurs in the context of production planning and control, particularly when dealing with the copying of routing or production order data that includes external relationships. This error indicates that the system is unable to copy certain external relationships due to constraints or settings in the configuration.
  Causes:
  
  External Relationships: The error often arises when trying to copy a routing or production order that has external relationships (e.g., relationships to external operations or components) that are not allowed to be copied.
  Configuration Settings: The system configuration may restrict the copying of certain types of relationships, especially if they are not defined in the target object.
  Data Integrity Issues: There may be inconsistencies or missing data in the source or target objects that prevent the copying process from completing successfully.
  
  Solutions:
  
  Review External Relationships: Check the external relationships in the source object (e.g., routing or production order) to see if they are valid and can be copied. If they are not necessary, consider removing them before attempting to copy.
  Adjust Configuration: If the copying of external relationships is required, review the configuration settings in the relevant modules (e.g., Production Planning, Material Management) to ensure that the system allows for the copying of these relationships.
  Manual Entry: If the external relationships cannot be copied due to system restrictions, you may need to manually create the relationships in the target object after the initial copy.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version you are using, as there may be updates or patches that address this issue.
  Error Logs: Check the system logs for additional error messages or warnings that may provide more context about why the copying failed.
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with transaction codes related to routing and production orders (e.g., CA01 for creating routings, CO01 for creating production orders) to better understand where the error may be occurring.
  User Forums: Consider checking SAP community forums or user groups for discussions related to this error, as other users may have encountered and resolved similar issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a consultant who specializes in SAP Production Planning.