Warm Greeting GAMS Community,

I am new very new to GAMS and just started using it.

Here is my problem. Observe the following equation:

```
Equation3(d,t,i).. Vup(d,t,i) =e= Vup(d,t-1,i) + Dp(d,t,i) - Dg(d,t,i);
```

Symbol: d,t,i are sets.

Symbol: Vup, Dp, Dg are variable.

d,t,i are properly defined earlier in the code. And variables Vup,Dp and Dg are provided with their

upper and lower bound using variable attributes .lo .up.

After running this code, I am receiving the following error saying:

```
Infeasibility row 'Equation3(1,1,p49)': 0 = 14.2.
Presolve time = 0.04 sec. (9.20 ticks)
```

The RHS of the equation is indeed 14.2 but why does the LHS variable (Vup) is not taking up the value.

Why I am getting ‘0 = 14.2’ and infeasibility row error.

Kindly, any veteran user point out my mistake. What I have missed?