I would like to sign in to Managed Gateway for Spend&Network portal as a supplier.

You can access the Managed Gateway for Spend&Network portal from your Business Network Supplier account or by using the e-mail inviting you to register on Business Network. You need to set up Managed Gateway to access it.

1. In the top right corner, click [user-initials] and select Settings.
2. Click Electronic Order Routing.
3. Under External System Configuration, click
   Configure SAP Integration Suite, managed gateway for spend management and SAP Business Network (non-native integration).
4. Click Log in to Managed Gateway for Spend&Network.

For more information, please refer to the section Logging In to the SAP Integration Suite, Managed Gateway for Spend Management and SAP Business Network from supplier Managed Gateway guide.

For steps to enable Managed Gateway for Spend&Network on your Business Network Supplier account, please refer to FAQ How do I enable the Managed Gateway for Spend&Network as a supplier?

SAP Business Network for Procurement & Supply Chain > Transaction Documents
SAP Integration Suite Managed Gateway > Managed Gateway for Business Network