The FTP connection from CA Workload System Agent 11.3 to z/OS (Mainframe) fails with the following error.
Connection established to some_frame.example.COM:21
234 Security environment established - ready for negotiation
Certificate  issuer: CN=CACERT Organization, O=CACERT CA
331 Send password please.
230 MFUSER1 is logged on. Working directory is "MFUSER1.".
215 MVS is the operating system of this server. FTP Server is running on z/OS.
Uploading binary \\\\UNIX_SERVER\\FILES\\TEST1.MF$02.IM.EBCDIC.DAT --> 'TEST.1234.EFT.TRAN(+1)'
200 Protection buffer size accepted
200 Data connection protection set to private
200 Port request OK.
200 Representation type is Image
200 Data transfer mode is Block
SITE LR=94 REC=FB BLK=0(TEST.1234.EFT.TRAN(+1))
200 SITE command was accepted
200 Representation type is Ebcdic NonPrint
125 Storing data set TEST.1234.EFT.TRAN.G009V00
Cipher Suite SSL_RSA_WITH_RC4_128_MD5 is used for this connection
Uploaded 21432 bytes in 0.94 seconds, 222.65 Kbytes/sec.
451:Transfer aborted due to file error. File is catalogued.
221 Quit command received. Goodbye.