ERROR for '@' for function

How to handle this below situation, I am getting error for function, my  Postgres version is 9.4

 is

ERROR:  syntax error at or near "@"
LINE 67:   AUTONUMBERSETTING@REPOS.BIRCHSTREET.NET
                            ^
********** Error **********

ERROR: syntax error at or near "@"
SQL state: 42601
Character: 3274

------------------------

BEGIN
  select NEXT_NUMBER into STRICT  id from
  AUTONUMBERSETTING@REPOS.BIRCHSTREET.NET
  --pbeach_repos8.AUTONUMBERSETTING
  where subscriber_id=subscriber and AUTO_NUMBER_ID=348 and company_id= buyer;
   exception
  when no_data_found then
       insert into smerror_log(error_log_id,subscriber_id,company_id,error_message,system_message,
       method_name,creation_date,creation_user,update_date,update_user)
     values (nextval('smerror_log_sequence'),subscriber,buyer,'Auto Number not found',null,
       'PunchoutProfile'  ,LOCALTIMESTAMP,'Admin',LOCALTIMESTAMP,'Admin');
       commit;
      return;
  end;

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