R20:31.

Whenever possible, he will name the person or persons who may be individually responsible for designs, inventions, writings, or other accomplishments.

[See Codes 14(a)., III.10.a. ]

Code is relevant when:

Engineer is involved in engineering work

Code is violated when:

Engineer does not name the person or persons who were responsible for designs
OR
Engineer does not name the person or persons who were responsible for an invention
OR
Engineer does not name the person or persons who were responsible for writings
OR
Engineer does not name the person or persons who were responsible for other accomplishments

Code is not violated when

Engineer does not name the person or persons who were responsible for designs
AND
Engineer names the person or persons who were responsible for an invention
AND
Engineer names the person or persons who were responsible for writings
AND
Engineer names the person or persons who were responsible for other accomplishments