We are trying to load additional address for business partners. In the data migration template, we get to see that External Address Number is mandatory if we have to maintain additional address. But whatever unique value we try, we get error message that External address number already exists for the partner. How to rectify this error and what is the value expected for this field?
We plan to have external number range. Also we want to have master data synchronization with ECC system. What are the settings that we need to ensure for the same?