Booking through Diya: procedure, terms, notification of TCK and cancellation of booking

In 2026, the booking of military conscripts through electronic services has become a more structured and digitalized process. One of the key tools for arranging a deferment from conscription during mobilization is the use of the portal and application «Diya». Therefore, the subject of booking employees through Diya is extremely important in the current realities. 

Separately, it is worth considering how much time booking through Diya takes and the procedure for booking through Diya for different citizens. It is also necessary to consider separately the cancellation of booking through Diya and whether it is mandatory to notify the TCK about booking through Diya. 

What is booking through Diya

Before considering how booking through Diya takes place, it is worth reviewing the entire process from start to finish. Booking through Diya is an electronic procedure for granting a deferment from conscription for military service during mobilization to certain categories of military conscripts working in enterprises that are critical for the functioning of the economy, the defense industry, or ensuring the livelihoods of the population.

The legal basis for booking in 2026 remains the norms of legislation on mobilization preparation and mobilization, as well as by-laws of the Cabinet of Ministers of Ukraine that define the criteria for the criticality of enterprises and the procedure for submitting lists. Electronic interaction through Diya involves integration with state registries, including the registry of military conscripts, the registry of legal entities, and other information systems.

In fact, booking means temporarily securing an employee to an enterprise with the provision of a deferment from conscription for a specified period. This does not exempt the individual from their military obligation altogether, but guarantees the ability to continue working at the enterprise which performs important functions under martial law conditions.

Who can arrange booking

The booking through Diya can be arranged by directors or authorized persons of enterprises, institutions, and organizations that are officially recognized as critically important. This status is confirmed by a corresponding decision of the authorized body. In 2026, the criteria for criticality include the amount of taxes paid, strategic significance for the economy, participation in the fulfillment of state contracts, and ensuring the needs of defense or vital support for the region.

Not all employees are subject to booking. Usually, a limit on the percentage of military conscripts from the total number of employees of the enterprise is established. Specific positions or functions without which the activities of the enterprise would be complicated or impossible are separately defined. The priority is given to specialists with unique qualifications, engineers, technical workers, IT specialists, energy, transport, and defense industry specialists.

Submission of lists is carried out on behalf of the legal entity. The employee themselves cannot independently apply for booking through Diya – this is the exclusive competence of the employer.

Procedure for booking employees through Diya

The booking procedure involves forming an electronic list of military conscript employees with the indication of their personal data, position, military accounting specialty, and justification of the necessity for booking. In 2026, a mandatory condition is the relevance of the employee's military accounting data.

After the list is submitted through Diya, it undergoes automated verification in state registries. If it meets the requirements, the information is submitted for approval to the relevant executive authority or the General Staff of the Armed Forces of Ukraine (depending on the category of the enterprise). After approval, electronic booking confirmation is generated.

An important stage is informing the TCK. Data about the booked employee is entered into the registry of military conscripts, and the territorial center receives a notification about the provided deferment. This prevents the parallel delivery of a summons to such individual during the period of the booking.

Term and duration of booking

An important question is the term of booking through Diya. In 2026, the booking period usually lasts up to six months with the possibility of extension. The specific duration is determined by the decision of the authorized body. After the term expires, the enterprise has the right to re-submit documents for the extension of booking if there are grounds for it.

Booking may be prematurely terminated if the enterprise loses critical status, the employee is dismissed, or inaccurate data is discovered. In this case, the deferment becomes invalid, and the information in the registries is updated.

How long does the booking process take

The duration of the procedure depends on the correctness of the submitted data and the workload of the system. On average, in 2026, the review of the application through Diya takes from several working days to two weeks. If additional verification or clarification of information is needed, the period may be extended.

Automation of the process allows to shorten the time compared to the paper procedure, which used to take significantly longer. At the same time, any errors in personal data may lead to the rejection of the application, requiring resubmission.

How booking occurs through Diya step by step

First, the enterprise checks the availability of critical status and the relevance of the military accounting data of employees. Then, the authorized person logs into the electronic cabinet via Diya using a qualified electronic signature.

In the next stage, an electronic list of employees is formed with the necessary information indicated. Upon filling out all fields, the application is signed with an electronic signature and sent for review.

The system automatically checks the data in state registries. If a positive decision is made, electronic confirmation is generated, which is displayed in the enterprise's cabinet. Information is simultaneously sent to the TCK for updating accounting data.

Cancellation of booking through Diya

Cancellation of booking is possible in several cases: dismissal of the employee, transfer to another position that is not subject to booking, loss of critical status by the enterprise, or submission of inaccurate information. In 2026, cancellation is also carried out through the electronic cabinet in Diya.

The employer is required to promptly submit a notification about the grounds for cancellation of the booking. After entering the relevant information, the system transmits data to the registry of military conscripts and notifies the TCK. From this moment on, the deferment is considered terminated.

Delayed notification of cancellation may be regarded as a violation of mobilization legislation and may entail liability. Therefore, it is important for enterprises to monitor personnel changes and timely update information in the electronic system.

Notification of the territorial recruitment center (TCK)

In 2026, notifying the territorial recruitment center and social support is a mandatory element of the booking procedure. Although the process of submitting lists is carried out through electronic services, including Diya, the final actualization of data occurs through entering information into registries that TCK works with.

After the booking is approved by the relevant authority, the data is automatically sent to the registry of military conscripts. Based on this information, the territorial center at the employee's military registration location receives a notification about granting a deferment. This means that when forming summonses or lists for mobilization, the system takes into account the current booking status.

At the same time, the employer must ensure the employee has relevant military accounting data: correct registration place, updated information about marital status, education, and military accounting specialty. If the data in the registry is inaccurate, the TCK may require clarification, and the review of booking may be suspended.

In case of changing circumstances – dismissal of an employee, change of position, or other grounds for loss of booking – the employer must initiate cancellation through the electronic system. After this, the information is also transmitted to the TCK, and the deferment ceases to be valid. If the enterprise does not report such changes, this may be interpreted as a violation of mobilization discipline.

It should also be noted that even with booking, the employee remains on military accounting. TCK has the right to call them for data clarification or medical examination if it does not contradict the conditions of the provided deferment. Booking does not mean full exemption from interaction with military registration authorities.

Rights and obligations of an employee during booking

An employee who is booked has the right to continue fulfilling their labor duties without the risk of conscription during the deferment period. They also have the right to obtain confirmation of booking – an electronic document or extract from the relevant system that confirms the availability of a valid deferment.

At the same time, the employee is obliged to maintain the relevance of their military accounting data. If their place of residence, marital status, or other circumstances subject to military registration changes, they must notify TCK within the established time frames. Having a booking does not exempt them from the obligation to comply with military accounting rules.

The employee must also inform the employer in case of receiving a summons or call to TCK. In most cases, information about the booking is already contained in the registry, however, technical failures or unsynchronized data may occur. Timely notification helps to avoid misunderstandings.

It is important to understand that booking only applies during employment at a specific enterprise. If labor relations are terminated, the right to deferment is automatically lost after changes are made to the registry. Therefore, the employee should consider this aspect when changing jobs.

In case of violating booking conditions – for example, if the employee is actually not performing duties or is working elsewhere without notification – this may be a basis for verification and cancellation of the deferment.

Typical mistakes and nuances

Among the most common mistakes in 2026 is submitting lists of employees without prior verification of their military accounting data. If a person is not registered or has outdated information, the system may reject the application. In this case, the enterprise has to go through the procedure again after correcting the deficiencies.

Another typical problem is exceeding the established limit of booked employees. Legislation stipulates restrictions on the percentage of military conscripts that can be booked. If an enterprise submits a list exceeding the allowable number, part of the applications will be rejected.

Sometimes employers mistakenly believe that submitting an application automatically means granting deferment. In fact, booking only takes effect after approval by the authorized body and entering information into the registry. Until that moment, the employee is not considered booked.

Another nuance is the term of booking. Enterprises should track the expiration date of the deferment in advance and submit documents for renewal in due time. If the term expires and no new decision is made, the employee loses protection from conscription.

Finally, the issue of compatibility needs special attention. If an employee works at several enterprises, booking is only possible at the primary place of work. Submitting an application at a side job without the relevant grounds may be rejected.

Thus, successful booking through electronic services depends on data accuracy, timely submission of information, and proper interaction between the enterprise, employee, and TCK. In 2026, digitalization significantly simplified the procedure, but the responsibility for the accuracy and relevance of information remains with the parties to the labor relations.