A syntax error in a constraint loop

[Hany Osman]

Hi,

Recently I have this syntax error in one of my constraints 

syntax error
context:  subject to precedence_in_part_platform {j in J, l  >>> in  <<< J: l<>j} : 1 + x[j] >= f[j,l] + x[l];
ampl: 

The model was working fine las month. I do not know the reason for this error, given that the model have earlier constraints with this loop but it did not give any syntax error.

Could you please help, Thanks a lot

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