How To Fix CP170 - External relationships cannot be copied

CP170 - Overview

• 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.

CP170 - Details

• 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)