Hi Niklas,
The scenario that Pragya is proposing is the best one IMHO.
You have to define the ID mapping before trigering the integration between systems.
If you don't you will create duplicates.
Two scenarios are possible:
1- Once the ERP ID is defined, it should be added in C4C ID mapping and only after that the integration to C4C of the newly created account in ERP should be triggered.
This is a lot of manual steps.
2- You define the C4C internal ID in a custom field of the ERP customer and edit the ERP to C4C iflow to map the Z field to C4C internal ID field. This will fill the C4C ID mapping table and allow a smooth integration.
Best regards,
Benjamin