diff --git a/modules/ixBidAdapter.js b/modules/ixBidAdapter.js
index c22c0af7f4d..136cf6f25f0 100644
--- a/modules/ixBidAdapter.js
+++ b/modules/ixBidAdapter.js
@@ -244,6 +244,8 @@ function bidToVideoImp(bid) {
   }
 
   imp.video = videoParamRef ? deepClone(bid.params.video) : {};
+  // populate imp level transactionId
+  imp.ext.tid = deepAccess(bid, 'ortb2Imp.ext.tid');
 
   // copy all video properties to imp object
   for (const adUnitProperty in videoAdUnitRef) {
@@ -355,6 +357,9 @@ function bidToNativeImp(bid) {
     ver: '1.2'
   };
 
+  // populate imp level transactionId
+  imp.ext.tid = deepAccess(bid, 'ortb2Imp.ext.tid');
+
   _applyFloor(bid, imp, NATIVE);
 
   return imp;
@@ -1126,6 +1131,22 @@ function buildRequest(validBidRequests, bidderRequest, impressions, version) {
       }
     }
 
+    // add identifiers info to ixDiag
+    const pbaAdSlot = impressions[transactionIds[adUnitIndex]].pbadslot
+    const tagId = impressions[transactionIds[adUnitIndex]].tagId
+    const adUnitCode = impressions[transactionIds[adUnitIndex]].adUnitCode
+    const divId = impressions[transactionIds[adUnitIndex]].divId
+    if (pbaAdSlot || tagId || adUnitCode || divId) {
+      const clonedRObject = deepClone(r);
+      const requestSize = `${baseUrl}${parseQueryStringParameters({ ...payload, r: JSON.stringify(clonedRObject) })}`.length;
+      if (requestSize < MAX_REQUEST_SIZE) {
+        r.ext.ixdiag.pbadslot = pbaAdSlot;
+        r.ext.ixdiag.tagid = tagId;
+        r.ext.ixdiag.adunitcode = adUnitCode;
+        r.ext.ixdiag.divId = divId;
+      }
+    }
+
     const isLastAdUnit = adUnitIndex === transactionIds.length - 1;
 
     if (wasAdUnitImpressionsTrimmed || isLastAdUnit) {
@@ -1259,6 +1280,13 @@ function createNativeImps(validBidRequest, nativeImps) {
     nativeImps[validBidRequest.transactionId].ixImps = [];
     nativeImps[validBidRequest.transactionId].ixImps.push(imp);
     nativeImps[validBidRequest.transactionId].gpid = deepAccess(validBidRequest, 'ortb2Imp.ext.gpid')
+    nativeImps[validBidRequest.transactionId].pbadslot = deepAccess(validBidRequest, 'ortb2Imp.ext.data.pbadslot');
+    nativeImps[validBidRequest.transactionId].tagId = deepAccess(validBidRequest, 'params.tagId');
+
+    const adUnitCode = validBidRequest.adUnitCode;
+    const divId = document.getElementById(adUnitCode) ? adUnitCode : getGptSlotInfoForAdUnitCode(adUnitCode).divId;
+    nativeImps[validBidRequest.transactionId].adUnitCode = adUnitCode;
+    nativeImps[validBidRequest.transactionId].divId = divId;
   }
 }
 
@@ -1274,7 +1302,13 @@ function createVideoImps(validBidRequest, videoImps) {
     videoImps[validBidRequest.transactionId].ixImps = [];
     videoImps[validBidRequest.transactionId].ixImps.push(imp);
     videoImps[validBidRequest.transactionId].gpid = deepAccess(validBidRequest, 'ortb2Imp.ext.gpid');
-    videoImps[validBidRequest.transactionId].tid = deepAccess(validBidRequest, 'ortb2Imp.ext.tid');
+    videoImps[validBidRequest.transactionId].pbadslot = deepAccess(validBidRequest, 'ortb2Imp.ext.data.pbadslot');
+    videoImps[validBidRequest.transactionId].tagId = deepAccess(validBidRequest, 'params.tagId');
+
+    const adUnitCode = validBidRequest.adUnitCode;
+    const divId = document.getElementById(adUnitCode) ? adUnitCode : getGptSlotInfoForAdUnitCode(adUnitCode).divId;
+    videoImps[validBidRequest.transactionId].adUnitCode = adUnitCode;
+    videoImps[validBidRequest.transactionId].divId = divId;
   }
 }
 
@@ -1302,6 +1336,13 @@ function createBannerImps(validBidRequest, missingBannerSizes, bannerImps) {
   bannerImps[validBidRequest.transactionId].gpid = deepAccess(validBidRequest, 'ortb2Imp.ext.gpid');
   bannerImps[validBidRequest.transactionId].dfp_ad_unit_code = deepAccess(validBidRequest, 'ortb2Imp.ext.data.adserver.adslot');
   bannerImps[validBidRequest.transactionId].tid = deepAccess(validBidRequest, 'ortb2Imp.ext.tid');
+  bannerImps[validBidRequest.transactionId].pbadslot = deepAccess(validBidRequest, 'ortb2Imp.ext.data.pbadslot');
+  bannerImps[validBidRequest.transactionId].tagId = deepAccess(validBidRequest, 'params.tagId');
+
+  const adUnitCode = validBidRequest.adUnitCode;
+  const divId = document.getElementById(adUnitCode) ? adUnitCode : getGptSlotInfoForAdUnitCode(adUnitCode).divId;
+  bannerImps[validBidRequest.transactionId].adUnitCode = adUnitCode;
+  bannerImps[validBidRequest.transactionId].divId = divId;
 
   // Create IX imps from params.size
   if (bannerSizeDefined) {
diff --git a/test/spec/modules/ixBidAdapter_spec.js b/test/spec/modules/ixBidAdapter_spec.js
index 233fac6f426..a25e6b1c6a0 100644
--- a/test/spec/modules/ixBidAdapter_spec.js
+++ b/test/spec/modules/ixBidAdapter_spec.js
@@ -290,6 +290,7 @@ describe('IndexexchangeAdapter', function () {
     {
       bidder: 'ix',
       params: {
+        tagId: '123',
         siteId: '123',
         size: [300, 250],
       },
@@ -304,7 +305,10 @@ describe('IndexexchangeAdapter', function () {
       },
       ortb2Imp: {
         ext: {
-          tid: '173f49a8-7549-4218-a23c-e7ba59b47230'
+          tid: '173f49a8-7549-4218-a23c-e7ba59b47230',
+          data: {
+            pbadslot: 'div-gpt-ad-1460505748562-0'
+          }
         }
       },
       adUnitCode: 'div-gpt-ad-1460505748562-0',
@@ -320,6 +324,7 @@ describe('IndexexchangeAdapter', function () {
     {
       bidder: 'ix',
       params: {
+        tagId: '123',
         siteId: '456',
         video: {
           skippable: false,
@@ -344,7 +349,10 @@ describe('IndexexchangeAdapter', function () {
       },
       ortb2Imp: {
         ext: {
-          tid: '173f49a8-7549-4218-a23c-e7ba59b47230'
+          tid: '173f49a8-7549-4218-a23c-e7ba59b47230',
+          data: {
+            pbadslot: 'div-gpt-ad-1460505748562-0'
+          }
         }
       },
       adUnitCode: 'div-gpt-ad-1460505748562-0',
@@ -2614,6 +2622,9 @@ describe('IndexexchangeAdapter', function () {
         expect(diagObj.allu).to.equal(2);
         expect(diagObj.version).to.equal('$prebid.version$');
         expect(diagObj.url).to.equal('http://localhost:9876/context.html')
+        expect(diagObj.pbadslot).to.equal(DEFAULT_MULTIFORMAT_VIDEO_VALID_BID[0].ortb2Imp.ext.data.pbadslot)
+        expect(diagObj.tagid).to.equal(DEFAULT_MULTIFORMAT_VIDEO_VALID_BID[0].params.tagId)
+        expect(diagObj.adunitcode).to.equal(DEFAULT_MULTIFORMAT_VIDEO_VALID_BID[0].adUnitCode)
       });
     });
   });