Documentation of academic and professional credentials usually consists of a printed, formal document. The issuing institution often maintains a record of the credential as well. Academic credentials are normally valid for the lifetime of the person to whom they are issued. Professional certifications are normally valid for a limited number of years, based on the pace of change in the certified profession, and require periodic recertification through reexamination (to demonstrate continuing competency as occupational standards of practice evolve) or continuing professional development (to demonstrate continually enhanced competency).

https://en.wikipedia.org/wiki/Credential#Academic_and_profes...

Credentials is usually plural but 'credential' does exist.

The definition of a credential is a specific qualification or achievement that shows you are qualified or it is a document or certificate proving your identity for a specific purpose.

https://www.yourdictionary.com/credential

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Note added at 14 hrs (2020-09-29 09:42:35 GMT)
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This credential certifies that the bearer has accomplished the following:

https://credentials.tesol.org/group/186626