Warn
These errors impact few specific call-flows majorly, but not blockers of functionality. Example errors are as follows:
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Node discovery of SBA fails but we have more options to retry.
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Mandatory IE missing in a NAS message
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RPC timeout
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Procedural timeout
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Validation failure (not critical)
Example: Registration rejected as Registration request message received registration type as the Reserved registration type.
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External entity sending unexpected or negative response
Example: Handover Cancel, Hand over Failure, or Initial Context Setup Failure
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Unexpected value of objects maintained by AMF
Example: NIL value of transaction
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Unable to fetch a subscriber