Troubleshooting
Problem
When using a Verify action to verify a digital signature, the following error is returned: "Unsupported or unrecognized Signature signer format in the message." What causes this error and what actions are neccessary to resolve the problem?
Symptom
The following error string is returned by the Verify action:
"Unsupported or unrecognized Signature signer format in the message."
[{"Product":{"code":"SS9H2Y","label":"IBM DataPower Gateway"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":"General","Platform":[{"code":"PF009","label":"Firmware"}],"Version":"4.0.2;5.0.0;6.0.0;6.0.1;7.0.0","Edition":"","Line of Business":{"code":"LOB77","label":"Automation Platform"}}]
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Document Information
Modified date:
16 June 2026
UID
swg21460170