APIC v5 is not supported. Has been replaced. I suspect you knew that.
What flow does the TLS Profile support? Is it a Client or Server profile? I suspect you intended to assign a TLS Server Profile to an API Gateway SNI to support the invocation of an API you published to the API Gateway. Please check the TLS definitions -- Keystore & Truststore.
However, you might be doing something else. Your statement "backend i am calling in API Manager" -- is that correct? Are you calling an API in the API Manager? If you are, the above paragraph does not apply. I recommend you use the "apic toolkit" CLI.
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Ravi Ramnarayan
Technical Account Manager - Expertise Connect
IBM
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