You have a working communication arrangement in your Cloud for Customer (C4C) tenant and you use certificate based authentication. You notice that the messages from C4C to your external system start to fail with 'Unauthorized(401)' errors. When you check the certificate, you see that the validation date has changed.
SAP Cloud for Customer
tenant certificate, m user certificate, 401, unauthorized , KBA , LOD-CRM-INT-ERP , Integration of C4C with ERP , LOD-CRM-INT-CRM , Integration of C4C with CRM , How To
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