There are many such things, so we can make a supplementary explanation in the system. Because the general business trip does not include on-site service fixed at a certain venue for a period of time. On-site service is a company-to-company behavior, not an invitation from a company to an individual. In order to cooperate happily, the company is responsible for providing accommodation for technical service personnel. Some companies use the travel contract system, so travel will be higher. You can't provide accommodation for individuals just because of the convenience provided by the venue. But after all, it was during a business trip. In view of this situation, it is good to supplement the corresponding travel system.