How do I change the System ID for an existing Connection in a Managed Gateway for Spend&Network Project?

To perform the System ID change, follow the steps below:

1. Go to Basic Data
2. Click on the pencil icon () to edit the correspondent System ID
3. Change the System ID > Save > Rename System ID > Yes > Finish

SAP Integration Suite Managed Gateway > Managed Gateway for Business Network SCC > Managed Gateway for Buyer Business Network SCC