"{\"message\":\"Error occurred during \\\"tier_prices\\\" processing. Error occurred during \\\"customer_group_id\\\" processing. The \\\"*****\\\" value's type is invalid. The \\\"int\\\" type was expected. Verify and try again.\"}"
Price lists that are present in your ERP should always be mapped.Or you have to filter your price list from your ERP.
If your price list is not mapped in your settings to a relevant customer group, the SEND will fail.
A price list cannot be mapped to multiple groups.
You can map multiple price lists on 1 group. This makes possible that you can then send both discounts and graduated scales to 1 group, if these are in different price lists.
Setup price synchronization for AFAS: AFAS price synchronization