'error may occur' is a correct and usable phrase in written English.
You can use it when you expect that a mistake or issue may arise, such as when writing instructions. For example: "Follow the steps outlined below to complete the task, but keep in mind that error may occur if any of the instructions are not followed correctly."
It has been suggested that a systematic error may occur when measuring stresses deep in materials due to wavelength-dependent attenuation of the incident and/or diffracted beam.
This error may occur even for an equation written in the conservative form not only in the solution containing a shock wave but also for the smooth solution with strong gradients.
"Patients understand that one-off human error may occur.
An octave error may occur in our case because of the overlapping partials of the octave notes.
This error may occur because of breakdown/maintenance/replacement of components in the power receiving station under either breakdown maintenance or regular maintenance.
Measurement error may occur if the skills measured in PIAAC are an error-ridden measure of the human capital relevant in the labor market.
(Errors may occur if the voting bloc is not secure. Or, occasionally, if it's a little too secure).
In some cases, medication errors may occur in which patients are given the wrong medication or too much or too little of a medication while in a hospital.
During the actual forging operation, several types of dimensional errors may occur due to the inadequate control of process parameters.
Separation from cardiopulmonary bypass (CPB) requires multiple preparatory steps, during which mistakes, omissions, and human errors may occur.
Several systematic errors may occur during the analysis of uninhibited enzyme kinetic data using commercially available multiwell plate reader software.
