# Indicator constraints

**URL:** <https://discourse.julialang.org/t/indicator-constraints/45030>\
**Category:** General Usage\
**Created:** [August 16, 2020, 9:34am UTC](https://discourse.julialang.org/t/indicator-constraints/45030 "2020-08-16T09:34:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![mamo](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/mamo/32/25591_2.png) [@mamo](https://discourse.julialang.org/u/mamo)\
**Post date:** [August 16, 2020, 9:34am UTC](https://discourse.julialang.org/t/indicator-constraints/45030/1 "2020-08-16T09:34:29Z")

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This is an indicator constraint:  
cl23[(f1,f2) in FO, j in U, t in TIME: t\<=end-15],  
CL1[f1,f2,j,t]=0 ==\> FAS[f1,j,t]+FASa[f2,j]\<=1  
is it possible for GLPK or CBC to handle it or should be transformed?  
Thanks,  
Marco