Unable to find GDX File for input data from

GAMS
1

Hello Experts !
Need your help & guidance.
I am a new user of GAMS. I am trying to read in data from EXCEL and error I am getting is 510 (GDX file not found) and 502 (unable to load data). My code is given below:

------ CODE START -----
Sets
g generators
t time-steps /1*96/
r regions /W, N, E, S, NE/
;

alias (r,r1);

Parameter RegIndex(r)
/
W 1
N 2
E 3
S 4
NE 5
/;

Parameters GenData(g,), ATC(r,r1,t), Schedule(g,t), ReserveRequirement(t,);

$Call GDXXRW I=D:\SCS\My_GAMS\Programs\Learning_Folder\Despatch_96Blocks\InputData.xls O=InputData.gdx set=g RDim=1 rng=GenData!a2:a10000 par=GenData RDim=1 CDim=1 rng=GenData!a1:R10000 par=ATC RDim=2 CDim=1 rng=ATC!a3:XY10000 par=Schedule RDim=1 CDim=1 rng=Schedule!a4:XY10000
$GDXIN InputData
$LOAD g
$LOAD GenData
$LOAD ATC
$LOAD Schedule
$GDXIN

display gendata, ATC, Schedule;

$Call GDXXRW I=D:\SCS\My_GAMS\Programs\Learning_Folder\Despatch_96Blocks\InputData.xls O=InputData.gdx par=ReserveRequirement RDim=1 CDim=1 rng=Reserve!a3:d10000
$GDXIN InputData

$LOAD ReserveRequirement

$GDXIN
------------------ CODE END -------------------

The Error is as follows:

-------------- ERROR MESSAGE ---------------
GAMS 25.1.2 r67455 Released Aug 1, 2018 WEX-WEI x86 64bit/MS Windows 08/19/18 07:55:42 Page 1
G e n e r a l A l g e b r a i c M o d e l i n g S y s t e m
C o m p i l a t i o n


1 * POSOCO Dispatch model with co-optimized ancillary services
2
3 Scalar Overload overload factor /0.05/ ;
4 Sets
5
6 g generators
7 t time-steps /196/
8 r regions /W, N, E, S, NE/
9 ;
10
11 alias (r,r1);
12
13 Parameter RegIndex(r)
14 /
15 W 1
16 N 2
17 E 3
18 S 4
19 NE 5
20 /;
21
22 Parameters GenData(g,), ATC(r,r1,t), Schedule(g,t), ReserveRequirement(t,
*);
23
**** File: C:\Users\00006\Documents\gamsdir\InputData.gdx
**** Msg : No such file or directory
25 $GDXIN InputData
**** $510
26 $LOAD g
**** $502
27 $LOAD GenData
**** $502
28 $LOAD ATC
**** $502
29 $LOAD Schedule
**** $502
31
32 display gendata, ATC, Schedule;
**** $141 $141 $141
33
**** File: C:\Users\00006\Documents\gamsdir\InputData.gdx
**** Msg : No such file or directory
35 $GDXIN InputData
**** $510
36
37 $LOAD ReserveRequirement
**** $502
38
40
41