Tag 356

EncodedSubjectLen

Abbreviation: EncSubjectLen

TypeLength

Tag356

AddedFIX.4.2

Used in1 messages

Byte length of encoded (non-ASCII characters) EncodedSubject (357) field.

Single field (key=value)

356=128

In a FIX message (Email)

8=FIX.4.4 | 9=... | 35=C | 49=SENDER | 56=TARGET | 34=1 | 52=20240101-09:30:00.000 | … | 356=128 | … | 10=...

Fields are delimited by SOH (ASCII 0x01), shown here as " | ". The highlighted field 356=128 is this field's position in the message.