The phrase "adjustments must be" is correct and usable in written English.
It can be used when indicating that changes or modifications are necessary or required in a particular context.
Example: "In order to improve the project's outcome, adjustments must be made to the current strategy."
Alternatives: "changes need to be" or "modifications are required".
Adjustments must be made.
Workforce adjustments must be made.
Adjustments must be made on the fly.
Whiteness and flatness, along with scale, are the critical factors for which adjustments must be made.
In such settings, appropriate variance adjustments must be made in order to estimate the sufficient sample size correctly.
The adjustments must be processed by each agency's human resources department, which depending on the agency, may not be staffed during the lapse.
At the beginning of each Hectospec run, and certainly if the fiber shoe has been moved from Chelle to Spec, a crude wavelength and aperture location adjustment must be made.
"Macro adjustment must be both grounded in the present and take a long-term view, so that economic activity is within reasonable bounds, and the rate of economic growth and employment levels do not slip below the lower limit".
An appropriate adjustment must be made to eliminate any duplicate charges to Federal awards when this category includes similar or identical activities as those included in the general administration and general expense category or other indirect (F&A) cost items, such as accounting, procurement, or personnel administration.
When an activity included in this indirect (F&A) cost category provides a service or product to another institution or organization, an appropriate adjustment must be made to either the expenses or the basis of allocation or both, to assure a proper allocation of costs.
Cardiff Garcia does a nice job summarising the discussion here, and he includes a useful chart from Nomura The pattern is clear, and while 3 years is a very small sample size, it is very tempting to conclude that the seasonal adjustment must be at least a little bit off.
