The phrase "internal note" is correct and usable in written English.
It can be used to refer to a message or reminder intended for internal communication within an organization or team.
Example: "Please make sure to add an internal note regarding the changes in the project timeline."
Alternatives: "internal memo" or "internal reminder".
So it was quite a rarity to unearth an internal note of one the other week.
An internal note from Thomas yesterday attempted to calm staff and reassure them that Steele's structure would remain in place.
Behaviour like this is simply unacceptable in our Groupe," Sadoun wrote in an internal note to staff.
"My message to those people is simple," Mr. Jenkins wrote in an internal note obtained by The New York Times.
In an internal note to employees, Mr. Gorman, 52, called the deal a "signature event" for the firm.
Too often I miss the hand-in-glove accompaniment that a professional conductor, who is following every external and internal note of a pianist's part, can provide.
Two weeks ago, he released internal notes from Merrill analysts that appeared to show that their private opinions conflicted with their rosier public views.
SME's internal notes claim that this option "uses innovative color combinations for modern coolness, attracting young fans" and that the mark "promises high entertainment".
According to internal notes, they found that many members of the city's Muslim community felt "marginalised", with disproportionately poor access to public services.
Internal notes from a March meeting of top Walmart managers show the company grappling with low customer confidence in its produce and poor quality.
The IPCC found internal notes by Hammond Suddards, suggesting that senior officers at Snig Hill, the force headquarters, acknowledged that some miners had not been treated properly and there was some perjury by officers.
