Read the keynote and every referenced detail/sheet number.
Confirm the referenced detail is in your current drawing set.
If the detail sheet is missing, stop that support/connection work and ask your foreman to get it.
Do not use a normal hanger/seismic detail if the keynote calls for a special one.
Photo the keynote and the location so the foreman/PM can find it fast.
Ask foreman
Does this keynote change the connection, material, support, or access detail?
Do not
Do not skip keynote numbers because the symbol looks familiar.
Why it matters
A tiny keynote can change the whole connection. If the referenced sheet is missing, guessing from memory turns a coordination issue into your install mistake.
Search words: Print Reading, Tags & Layout missing a keynote that changes the connection type keynote connection type detail print keynote connection type detail print foundation field