CCS/TMS320F28377S: The Sequence of DATAs from one mcu to another one ( when you send more than one package)

Tool/software: Code Composer Studio

Hi,

i am using SPI communication between two F28377S. and when  i was sending just one package 16bit data , there was not any problem.

BUT i am sending 16 bit,4 package from one mcu to another one as below:

for(Sdata_Buff=0;Sdata_Buff<4;Sdata_Buff++)
{
SpiaRegs.SPITXBUF = sdata[Sdata_Buff];
}

and reading from another one as below:

for(Rdata_Buff=0;Rdata_Buff<4;Rdata_Buff++)
{
rdata[Rdata_Buff]=SpiaRegs.SPIRXBUF;
}

So i have taken this from examples which is "spi_loopback_interrupts_cpu1".

but my problem is sequence of this data.for example the datas are send by mcu one as:

sdata[0]=10;
sdata[1]=11;
sdata[2]=12;
sdata[3]=13;

the second one reads the as

rdata[0]=13;
rdata[1]=11;
rdata[2]=12;
rdata[3]=10;

or

rdata[0]=11;
rdata[1]=10;
rdata[2]=12;
rdata[3]=13; 

or

...

i mean the sequence of reading is not same as sending sequence...

what sould i do for taking datas as correct sequence?

thank you for your helps..