Did you accidentally choose the wrong domain when filling in the information for the domain modification application? Can I change the headline field after the application is successful? Under normal circumstances, the headline area could not be modified after the application was successful. This was because when applying for the headline number, the platform would conduct a preliminary screening and matching of the applicants 'professional fields based on the information filled in and the content submitted. This matching process was based on the information and content submitted by the applicants. Therefore, if the field was selected wrongly, it might not match the matching requirements of the platform, resulting in the application being rejected or the content being rejected after approval. Of course, there were some special circumstances where the headline could be changed. For example, if the applicants provided some relevant evidence during the application process to prove that their field of expertise was different from the platform's requirements or that they had published some valuable content in their field, the platform might consider relaxing the restrictions on the field and allowing the applicants to modify the field. However, the specific situation still needs to be decided according to the official rules of the headline platform. It is recommended that applicants carefully check the rules and requirements of the platform when applying and fill in the appropriate field according to their actual situation.