The problem is at least
//* CHANGER § LA LETTRE DANS L ARGUMENT ==> PREMIERE LETTRE DU JCL
The greater-than sign (">", a/k/a "right angle bracket") is a reserved character in ISPF file tailoring; it has a special meaning that causes the tailoring attempt to fail with RC=20. To use it, use the )DEFAULT
statement to assign its use to some other character. Note that there are seven
special characters; check your skeleton to ensure that no others are also being used.
"You have sat too long for any good you have been doing lately ... Depart, I say; and let us have done with you. In the name of God, go!" -- what I say to a junior programmer at least once a day