530 User ????\?????? cannot log in.
.EZA1735I Std Return Code = 26530, Error Code = 00011
what is that You cannot understand ???
did You try to look at the messages and codes manual
what did Your support group tell You
EZA1735I Std Return Code = rc, Error Code = ec
Explanation: FTP has ended with an error only because the user has specified EXIT as a start parameter. Normally FTP would continue.
rc is the standard return code. rc is in the format yyxxx, where
the subcommand code, which is a number from 0 to 99.
This is the last reply code received from the FTP server. If a subcommand failed before a reply was received from the server, this value is 000.
ec is the client error code set by the FTP client.
System Action: The FTP client ends.
User or Operator Response: To determine the cause of the error, refer to z/OS Communications Server: IP User's Guide and Commands for information about FTP return codes, including subcommand codes, client error codes, and reply codes.