The phrase "omission occurred" is correct and usable in written English.
You could use it when you are discussing an instance in which something has been excluded, left out, or left undone. For example: "The omission occurred when the report failed to include the necessary data."
The lowest grade does not necessarily mean the decision was wrong, but that a serious error or omission occurred, such as no evidence to justify the recommendations, or inconsistencies in the evidence provided.
An article published in Australasian Physical & Engineering Sciences in Medicine commented that "the most serious omission occurred when the medical users... returned the obsolete units to the Medical Dealer without notifying the OAEP" and that their insecure storage "invited theft".
The most common omission occurred due to the diagnosis being recorded in the free text only.
An omission occurred when a medication appeared on the discharge prescription but was not documented in the HDS.
An error of omission occurred when the animal failed to respond into any of the holes after the completion of the LH and was also followed by a TO.
In a high-stakes power test as we intended to design it can be expected that omission occurs when participants do not know the answer and therefore missing at random is less plausible (Mislevy and Wu 1996).
Annotation (2) shows a tendency of double adaptive thresholding (DAT) to omit dense clusters of roots; in the given example this omission occurs in the upper root crown.
We have shown in this study that errors of omission occur frequently during diagnostic workup in an experimental setting, including in cases perceived as being common in routine practice.
In this study, single day omissions occurred frequently.
Dose omissions occurred in 2 cycles.
Dose modifications or omissions occurred in 34 CBOP/BEP patients (79%) versus 16 (35%) on BEP.
