I want to know how to check the SAP Integration Suite Managed Gateway for Spend&Network standard mappings.

Where can I find the standard mappings?

Managed Gateway for Spend&Network

You can check the Standard Mappings in the following path:

1. Access Managed Gateway for Spend&Network Portal based on SAP Note 3663897 - How do I access my SAP Integration Suite, managed gateway for spend management and SAP Business Network?
2. Click on Resources > Implementation Guides > Mapping Specs.
3. Expand the SAP Ariba solution you utilize.
4. Search for the document type you need to check.

When you click on the correspondent document type, a document will be downloaded with all the mappings and fields supported in the SAP Integration Suite, managed gateway for spend management and SAP Business Network standard mappings.

SAP Integration Suite Managed Gateway > Managed Gateway - Portal
SAP Integration Suite Managed Gateway > Managed Gateway - Portal > Managed Gateway - Buy Side Mapping tool
SAP Integration Suite Managed Gateway > Managed Gateway for Procurement Custom Map (XSLT)
SAP Integration Suite Managed Gateway > Managed Gateway Foundation & Tools > Managed Gateway for Managed Gateway Portal