diff --git a/modules/pubmaticAnalyticsAdapter.js b/modules/pubmaticAnalyticsAdapter.js
index 753b706e363..9e1fa49fef2 100755
--- a/modules/pubmaticAnalyticsAdapter.js
+++ b/modules/pubmaticAnalyticsAdapter.js
@@ -294,6 +294,7 @@ function gatherPartnerBidsForAdUnitForLogger(adUnit, adUnitId, highestBid) {
         'pn': adapterName,
         'bc': bid.bidderCode || bid.bidder,
         'bidid': bid.bidId || bidId,
+        'origbidid': bid?.bidResponse?.partnerImpId || bid?.bidResponse?.prebidBidId || bid.bidId || bidId,
         'db': bid.bidResponse ? 0 : 1,
         'kgpv': getValueForKgpv(bid, adUnitId),
         'kgpsv': bid.params && bid.params.kgpv ? bid.params.kgpv : adUnitId,
@@ -313,7 +314,6 @@ function gatherPartnerBidsForAdUnitForLogger(adUnit, adUnitId, highestBid) {
         'af': bid.bidResponse ? (bid.bidResponse.mediaType || undefined) : undefined,
         'ocpm': bid.bidResponse ? (bid.bidResponse.originalCpm || 0) : 0,
         'ocry': bid.bidResponse ? (bid.bidResponse.originalCurrency || CURRENCY_USD) : CURRENCY_USD,
-        'piid': bid.bidResponse ? (bid.bidResponse.partnerImpId || EMPTY_STRING) : EMPTY_STRING,
         'frv': bid.bidResponse ? bid.bidResponse.floorData?.floorRuleValue : undefined,
         'md': bid.bidResponse ? getMetadata(bid.bidResponse.meta) : undefined,
         'pb': pg || undefined
@@ -487,7 +487,7 @@ function executeBidWonLoggerCall(auctionId, adUnitId) {
   pixelURL += '&en=' + enc(winningBid.bidResponse.bidPriceUSD);
   pixelURL += '&eg=' + enc(winningBid.bidResponse.bidGrossCpmUSD);
   pixelURL += '&kgpv=' + enc(getValueForKgpv(winningBid, adUnitId));
-  pixelURL += '&piid=' + enc(winningBid.bidResponse.partnerImpId || EMPTY_STRING);
+  pixelURL += '&origbidid=' + enc(winningBid?.bidResponse?.partnerImpId || winningBid?.bidResponse?.prebidBidId || winningBid.bidId);
   pixelURL += '&di=' + enc(winningBid?.bidResponse?.dealId || OPEN_AUCTION_DEAL_ID);
   pixelURL += '&pb=' + enc(pg);
 
diff --git a/test/spec/modules/pubmaticAnalyticsAdapter_spec.js b/test/spec/modules/pubmaticAnalyticsAdapter_spec.js
index cb13a4db234..002b7fb3063 100755
--- a/test/spec/modules/pubmaticAnalyticsAdapter_spec.js
+++ b/test/spec/modules/pubmaticAnalyticsAdapter_spec.js
@@ -585,7 +585,7 @@ describe('pubmatic analytics adapter', function () {
       expect(data.s[0].ps[0].pn).to.equal('pubmatic');
       expect(data.s[0].ps[0].bc).to.equal('pubmatic');
       expect(data.s[0].ps[0].bidid).to.equal('2ecff0db240757');
-      expect(data.s[0].ps[0].piid).to.equal('partnerImpressionID-1');
+      expect(data.s[0].ps[0].origbidid).to.equal('partnerImpressionID-1');
       expect(data.s[0].ps[0].db).to.equal(0);
       expect(data.s[0].ps[0].kgpv).to.equal('/19968336/header-bid-tag-0');
       expect(data.s[0].ps[0].kgpsv).to.equal('/19968336/header-bid-tag-0');
@@ -618,7 +618,7 @@ describe('pubmatic analytics adapter', function () {
       expect(data.s[1].ps[0].pn).to.equal('pubmatic');
       expect(data.s[0].ps[0].bc).to.equal('pubmatic');
       expect(data.s[1].ps[0].bidid).to.equal('3bd4ebb1c900e2');
-      expect(data.s[1].ps[0].piid).to.equal('partnerImpressionID-2');
+      expect(data.s[1].ps[0].origbidid).to.equal('partnerImpressionID-2');
       expect(data.s[1].ps[0].db).to.equal(0);
       expect(data.s[1].ps[0].kgpv).to.equal('this-is-a-kgpv');
       expect(data.s[1].ps[0].kgpsv).to.equal('this-is-a-kgpv');
@@ -659,7 +659,7 @@ describe('pubmatic analytics adapter', function () {
       expect(data.bc).to.equal('pubmatic');
       expect(data.eg).to.equal('1.23');
       expect(data.en).to.equal('1.23');
-      expect(data.piid).to.equal('partnerImpressionID-1');
+      expect(data.origbidid).to.equal('partnerImpressionID-1');
       expect(data.plt).to.equal('1');
       expect(data.psz).to.equal('640x480');
       expect(data.tgid).to.equal('15');
@@ -1372,7 +1372,7 @@ describe('pubmatic analytics adapter', function () {
       expect(data.s[1].ps[0].pn).to.equal('pubmatic');
       expect(data.s[0].ps[0].bc).to.equal('pubmatic');
       expect(data.s[1].ps[0].bidid).to.equal('3bd4ebb1c900e2');
-      expect(data.s[1].ps[0].piid).to.equal('partnerImpressionID-2');
+      expect(data.s[1].ps[0].origbidid).to.equal('partnerImpressionID-2');
       expect(data.s[1].ps[0].db).to.equal(0);
       expect(data.s[1].ps[0].kgpv).to.equal('this-is-a-kgpv');
       expect(data.s[1].ps[0].kgpsv).to.equal('this-is-a-kgpv');
@@ -1453,7 +1453,7 @@ describe('pubmatic analytics adapter', function () {
       expect(data.s[0].ps[0].pn).to.equal('pubmatic');
       expect(data.s[0].ps[0].bc).to.equal('pubmatic_alias');
       expect(data.s[0].ps[0].bidid).to.equal('2ecff0db240757');
-      expect(data.s[0].ps[0].piid).to.equal('partnerImpressionID-1');
+      expect(data.s[0].ps[0].origbidid).to.equal('partnerImpressionID-1');
       expect(data.s[0].ps[0].db).to.equal(0);
       expect(data.s[0].ps[0].kgpv).to.equal('/19968336/header-bid-tag-0');
       expect(data.s[0].ps[0].kgpsv).to.equal('/19968336/header-bid-tag-0');
@@ -1487,7 +1487,7 @@ describe('pubmatic analytics adapter', function () {
       expect(data.s[1].ps[0].pn).to.equal('pubmatic');
       expect(data.s[1].ps[0].bc).to.equal('pubmatic');
       expect(data.s[1].ps[0].bidid).to.equal('3bd4ebb1c900e2');
-      expect(data.s[1].ps[0].piid).to.equal('partnerImpressionID-2');
+      expect(data.s[1].ps[0].origbidid).to.equal('partnerImpressionID-2');
       expect(data.s[1].ps[0].db).to.equal(0);
       expect(data.s[1].ps[0].kgpv).to.equal('this-is-a-kgpv');
       expect(data.s[1].ps[0].kgpsv).to.equal('this-is-a-kgpv');
@@ -1528,7 +1528,7 @@ describe('pubmatic analytics adapter', function () {
       expect(data.bc).to.equal('pubmatic_alias');
       expect(data.eg).to.equal('1.23');
       expect(data.en).to.equal('1.23');
-      expect(data.piid).to.equal('partnerImpressionID-1');
+      expect(data.origbidid).to.equal('partnerImpressionID-1');
     });
 
     it('Logger: best case + win tracker in case of GroupM as alternate bidder', function() {
@@ -1585,7 +1585,7 @@ describe('pubmatic analytics adapter', function () {
       expect(data.s[0].ps[0].pn).to.equal('pubmatic');
       expect(data.s[0].ps[0].bc).to.equal('groupm');
       expect(data.s[0].ps[0].bidid).to.equal('2ecff0db240757');
-      expect(data.s[0].ps[0].piid).to.equal('partnerImpressionID-1');
+      expect(data.s[0].ps[0].origbidid).to.equal('partnerImpressionID-1');
       expect(data.s[0].ps[0].db).to.equal(0);
       expect(data.s[0].ps[0].kgpv).to.equal('/19968336/header-bid-tag-0');
       expect(data.s[0].ps[0].kgpsv).to.equal('/19968336/header-bid-tag-0');
@@ -1615,7 +1615,7 @@ describe('pubmatic analytics adapter', function () {
       expect(data.s[1].ps[0].pn).to.equal('pubmatic');
       expect(data.s[1].ps[0].bc).to.equal('pubmatic');
       expect(data.s[1].ps[0].bidid).to.equal('3bd4ebb1c900e2');
-      expect(data.s[1].ps[0].piid).to.equal('partnerImpressionID-2');
+      expect(data.s[1].ps[0].origbidid).to.equal('partnerImpressionID-2');
       expect(data.s[1].ps[0].db).to.equal(0);
       expect(data.s[1].ps[0].kgpv).to.equal('this-is-a-kgpv');
       expect(data.s[1].ps[0].kgpsv).to.equal('this-is-a-kgpv');
@@ -1654,7 +1654,53 @@ describe('pubmatic analytics adapter', function () {
       expect(data.bc).to.equal('groupm');
       expect(data.eg).to.equal('1.23');
       expect(data.en).to.equal('1.23');
-      expect(data.piid).to.equal('partnerImpressionID-1');
+      expect(data.origbidid).to.equal('partnerImpressionID-1');
+    });
+
+    it('Logger: best case + win tracker. Log bidId when partnerimpressionid is missing', function() {
+      delete MOCK.BID_RESPONSE[1]['partnerImpId'];
+      MOCK.BID_RESPONSE[1]['prebidBidId'] = 'Prebid-bid-id-1';
+      sandbox.stub($$PREBID_GLOBAL$$, 'getHighestCpmBids').callsFake((key) => {
+        return [MOCK.BID_RESPONSE[0], MOCK.BID_RESPONSE[1]]
+      });
+
+      config.setConfig({
+        testGroupId: 15
+      });
+
+      events.emit(AUCTION_INIT, MOCK.AUCTION_INIT);
+      events.emit(BID_REQUESTED, MOCK.BID_REQUESTED);
+      events.emit(BID_RESPONSE, MOCK.BID_RESPONSE[0]);
+      events.emit(BID_RESPONSE, MOCK.BID_RESPONSE[1]);
+      events.emit(BIDDER_DONE, MOCK.BIDDER_DONE);
+      events.emit(AUCTION_END, MOCK.AUCTION_END);
+      events.emit(SET_TARGETING, MOCK.SET_TARGETING);
+      events.emit(BID_WON, MOCK.BID_WON[0]);
+      events.emit(BID_WON, MOCK.BID_WON[1]);
+
+      clock.tick(2000 + 1000);
+      expect(requests.length).to.equal(3); // 1 logger and 2 win-tracker
+      let request = requests[2]; // logger is executed late, trackers execute first
+      expect(request.url).to.equal('https://t.pubmatic.com/wl?pubid=9999');
+      let data = getLoggerJsonFromRequest(request.requestBody);
+      expect(data.s).to.be.an('array');
+      expect(data.s.length).to.equal(2);
+
+      // slot 1
+      expect(data.s[0].ps[0].bidid).to.equal('2ecff0db240757');
+      expect(data.s[0].ps[0].origbidid).to.equal('partnerImpressionID-1');
+
+      // slot 2
+      expect(data.s[1].ps[0].bidid).to.equal('3bd4ebb1c900e2');
+      expect(data.s[1].ps[0].origbidid).to.equal('3bd4ebb1c900e2');
+
+      // tracker slot1
+      let firstTracker = requests[0].url;
+      expect(firstTracker.split('?')[0]).to.equal('https://t.pubmatic.com/wt');
+      data = {};
+      firstTracker.split('?')[1].split('&').map(e => e.split('=')).forEach(e => data[e[0]] = e[1]);
+      expect(data.bidid).to.equal('2ecff0db240757');
+      expect(data.origbidid).to.equal('partnerImpressionID-1');
     });
   });