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I have tried my best to explain .

first is a variable name. here i am using as flag.
NF- No. of fields in a record.


{if(first==1){print $9;first=0;next} #variable first is not having value...

try this,
awk -F"|" '
{if(first==1){print $9;first=0;next}for(i=1;i<=NF;i++){
if ($i~/\$AB_COMPONENTS/) {
split($i,a,"/");print substr(a[3],1,(index(a[3],"."))-1);first=1;
}}}' inputfile