we are importing Contacts and Accounts from C4C to SAP Marketing Cloud (via SOAP API) and for some Countries the values for Telephone/fax codes seems to be not maintained in SAP Marketing Cloud. Thus the error message is thrown and the corresponding entries are not imported. We have observed this e.g. for Cosovo (XK), and NL Antilles (AN). We have not found an option to maintain the codes ourselves. We have mainly looked into Manage your Solution > Basic Settings > Define Countries/ Regions, and Set Country-Specific Checks, respectively.
Do you have any suggestions on how to fix this issue?
I found the following post that could help SAP Marketing Cloud: Change validation logic for phone numbers | SAP Community I will check further if there is a standard way to maintain the proper area code.