hello, 

You can not change the test centre preference during the time of corrections. 

The Engineering, Agricultural and medical common entrance test is conducted by Jawaharlal Nehru Technical University Kakinada on behalf of Andhra Pradesh State council of Higher education. This is pre-requisite for admissions in professional course in Universities or private college oonstate of andhra pradesh. 

The Online application for has been released on 27 feb 2019 and is available to be filled without late fee till 27th march 2019.Since you have already filled, there is correction portal which opens from 06-04-2019 to 10-04-2019.

The correction portal are open for Category 1 and category 2. 
The Category 1 details CANNOT BE CHANGED even during the time of correction. Those Include - 

• Name of the Candiddate
• Father's Name
• stream
• Signature
• Date of birth
• photograph 
• qualyifying hall ticket number 
• community 

Changes however can be made in Category 2 details. which include - 

• Qualifying examination - Year of appearing or year of passing 
• Medium of iNstructions in Qualifying exam 
• Place of study - For both Intermediate or equivalent as well as SSC or equivalent 
• Bridge Course HAll tiket number
• Mother's Name 
• Birth state or district
• Gender 
• Special Category 
• Annual Income of Parents 
• Study Details
• SSC HAll ticket and Year of passing 
• mobile number 
• Aadhar and ration card details
• Adress for correspondancy 
• Local area Status

The category 2 can be corrected online from 06-04 to 10-04. Where as corrections in category 1 can be made by mailing to convenor APEAMCET and it will done at convenor offfice only by verification. However, you can request  regarding change in your test centre to convenor APEAMCET by mailing them the reason for the change. 
Here is the link for details for correction :https://sche.ap.gov.in/EAMCET/PDF/APEAMCET2019_Corrections.pdf

The link to contact APEAMCET office - https://sche.ap.gov.in/EAMCET/EamcetHomePages/ContactUs.aspx 

All the Best, Hope it Helps.