AccessMGR Credential

SoC: mRF54L15, SDK 3.0

AccessMgr::Instance().SetCredential(credentialIndex, creator, modifier, credentialStatus, credentialTypesecret);
Looking at the above API,  it accepts only kPIN credential Type  for secret. We want to store RFID data and when we try kRFID type, it returns the error.
The Secret is a ByteSpan (16 bytes I believe)  and can you please let me know how we can use it  for RFID? 
Thanks.
Subu
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