If you wish to retake just one skill of the IELTS test (One Skill Retake), you have the option to do so at a different test center. However, it is essential to ensure that the test centre you choose is the same company through which you initially took the test. For instance, if you took your original IELTS test with IDP, you are eligible to book your One Skill Retake only at any of the eligible IDP IELTS test centre. Please also check with the organisation that you are applying to if they accept One Skill Retake taken in a different country.
To check if this option is available to you, please log into your IDP IELTS account to view your IELTS result.