You are uploading the code list mapping from one C4C system to another and get error message,
"Change or delete duplicate rows with key XYZ in 'Condition Types".
SAP Cloud for Customer
You are uploading the code list mapping without merging in your ERP.
You have to execute the merge report in ERP first to have a context added to the code values.
Alternatively delete the entries and try again.
Code List upload, Condition Types, Duplicate Key, Code List , KBA , LOD-CRM-INT-ERP , Integration of C4C with ERP , How To