https://userapps.support.sap.com/sap/support/knowledge/en/2880453
2880453 - Update mode 1 is not supported by the extraction API for 0CUSTOMER_ATTR | SAP Knowledge...
Extraction of datasource 0CUSTOMER_ATTR shows error "Update mode 1 is not supported by the extraction API", Message no. R3011. The same error also may occur...