Fortran · File status code
What does IOSTAT 63 — Output Conversion Error mean in Fortran?
A value being written couldn't be converted to fit its output field without losing precision or exceeding the field width — the runtime fills the field with asterisks instead of silently truncating the number.
A value being written couldn't be converted to fit its output field without losing precision or exceeding the field width — the runtime fills the field with asterisks instead of silently truncating the number.
Widen the field width in the FORMAT descriptor (e.g. increase the W in Fw.d or Iw) so the largest expected value fits, especially after a variable's range grows over time.