Here we are, reunited with The solution? A nice little <\/p>\n <\/a><\/p>\n<\/div>\n The idea is that you will be able to specify a list of payload parameters to be removed one by one from the payload until the size is safely below the maximum of 8192. First things that will go are some of the default dimensions that no one really uses, such as \u2018Java Enabled\u2019<\/a> and \u2018Document Encoding\u2019<\/a>. Next, you can list all the Custom Dimensions you want to get rid of, in order of priority.<\/p>\n Finally, you\u2019ll be able to list the Enhanced Ecommerce impression parameters that you want to remove from each impression in the payload. The script will stop as soon as the length is below 8192, so you\u2019ll most likely end up with some impressions having more details than others.<\/p>\n Why stop at impressions? Because, from experience, that\u2019s where most problems lie. It shouldn\u2019t be too difficult to customize the script to also include Promotions and even \u201cregular\u201d Enhanced Ecommerce product objects.<\/p>\n Once you\u2019ve implemented this in your Enhanced Ecommerce tags, you should never see the following error in the console (if you have Google Analytics Debugger<\/a> activated, or if you have Universal Analytics running in debug mode<\/a>):<\/p>\n <\/p>\n <\/a><\/p>\n<\/div>\n I recommend implementing this For an alternative solution, take a look at this excellent article<\/a> by the awesome Dan Wilkerson from the equally awesome Bounteous<\/a> blog.<\/p>\n \n \n Subscribe to the Simmer newsletter<\/a> to get the latest news and content from Simo Ahava into your email inbox!\n <\/p>\n <\/span><\/p>\n To build the Note!<\/strong> If you already have a Add the following code into the Make sure you edit the The keys I have added to the Naturally, you might want to preserve some of these, e.g. When adding items to the Note that for This variable should be added to the tag which sends the Enhanced Ecommerce payload with impression objects to Google Analytics. To add it to the tag, either edit the Google Analytics Settings variable<\/a> in the impression tag, or add the field directly to the tag.<\/p>\n Browse to More Settings<\/strong> -> Fields to set<\/strong>, and add the following field:<\/p>\n Field name<\/strong>: customTask Like so:<\/p>\ncustomTask<\/code><\/a>. This time, we\u2019ll put this wonderful mechanism to work for a very, very good cause. One of the lesser known \u201cfeatures\u201d of Google Analytics<\/a> is that when the payload size (the request body that is actually sent to Google Analytics with each request) goes past a certain limit, specifically 8192 bytes<\/a>, the hit is aborted<\/strong> without warning. This can come as a surprise, because there\u2019s no indication anywhere in Google Analytics that you are missing hits because of this.<\/p>\ncustomTask<\/code> script, which recursively whittles away parts of the payload until the length is just below the cap.<\/p>\n![\"Automatically](\"https:\/\/www.simoahava.com\/images\/2018\/06\/automatically-reduce-payload-length.jpg#ZgotmplZ\")
<\/p>\n![\"payload](\"https:\/\/www.simoahava.com\/images\/2018\/06\/warning.jpg#ZgotmplZ\")
<\/p>\ncustomTask<\/code> together with my solution for sending the payload length<\/a> as a custom dimension. This way you\u2019ll be able to detect if you\u2019re approaching the maximum length of the payload with your hits, and you can then proceed to implement this payload length limiter when necessary.<\/p>\n
\n X<\/span><\/p>\n
\n The Simmer Newsletter<\/strong>\n <\/p>\nThe
customTask<\/code> variable<\/h2>\ncustomTask<\/code>, you need to create a new Custom JavaScript variable<\/strong>. Name it something like {{customTask – reduce payload length}}<\/strong>.<\/p>\n\n
customTask<\/code> implemented in your Enhanced Ecommerce tags, you\u2019ll need to combine the code below with the existing customTask<\/code> script you already have. For tips on how to do this, consult this guide<\/a>.<\/p>\n<\/blockquote>\ncustomTask<\/code> variable body:<\/p>\nfunction<\/span>() {\n return<\/span> function<\/span>(customModel) {\n \/\/ Add any other default parameters you want to strip from the payload\n<\/span> \/\/ into this array in order of priority. \n<\/span> \/\/ For more details, visit: https:\/\/bit.ly\/2MOhjBD\n<\/span> var<\/span> defaultParams = ['&je'<\/span>, '&de'<\/span>, '&sd'<\/span>, '&vp'<\/span>, '&sr'<\/span>];\n \n \/\/ List the (regular) Custom Dimensions you want to strip from the\n<\/span> \/\/ payload in order of priority. Leave the array empty if you don't\n<\/span> \/\/ want to remove Custom Dimensions. \n<\/span> \/\/ For more details, visit: https:\/\/bit.ly\/2MM6O1O\n<\/span> var<\/span> customDims = ['&cd198'<\/span>, '&cd199'<\/span>, '&cd200'<\/span>];\n\n \/\/ List the impression object parameters you want to strip from the\n<\/span> \/\/ payload in order of priority. Only list the field specifier, so\n<\/span> \/\/ instead of '&il1pi2va', write 'va', and instead of '&il1pi4cd3', write\n<\/span> \/\/ 'cd3'. For more details, visit: https:\/\/bit.ly\/2KehCHF\n<\/span> var<\/span> impressions = ['va'<\/span>, 'br'<\/span>, 'ca'<\/span>, 'ps'<\/span>, 'nm'<\/span>];\n \n \/\/ Don't touch the code below.\n<\/span> var<\/span> maxLength = 8192<\/span>,\n globalSendTaskName = '_'<\/span> + customModel.get('trackingId'<\/span>) + '_sendHitTask'<\/span>,\n originalSendHitTask = window<\/span>[globalSendTaskName] = window<\/span>[globalSendTaskName] || customModel.get('sendHitTask'<\/span>);\n \n customModel.set('sendHitTask'<\/span>, function<\/span>(sendModel) {\n \n var<\/span> ga = window<\/span>[window<\/span>['GoogleAnalyticsObject'<\/span>]];\n \n \/\/ Only log if in analytics debug mode.\n<\/span> var<\/span> log = function<\/span>(msg) {\n if<\/span> ('dump'<\/span> in<\/span> ga) {\n window<\/span>.console.log.apply(window<\/span>.console, [msg]);\n }\n };\n \n var<\/span> hitPayload = sendModel.get('hitPayload'<\/span>);\n \n var<\/span> removeKeys = function<\/span>(hitPayload, keys) {\n var<\/span> key, regex;\n while<\/span>(hitPayload.length >= maxLength && keys.length) {\n key = keys[0<\/span>];\n log('--> Removing '<\/span> + key);\n regex = new<\/span> RegExp<\/span>(key + '=[^&]+'<\/span>, 'gi'<\/span>);\n keys.shift();\n hitPayload = hitPayload.replace(regex, ''<\/span>);\n log('--> New length: '<\/span> + hitPayload.length);\n }\n return<\/span> hitPayload;\n };\n \n var<\/span> removeImpressions = function<\/span>(hitPayload, keys) {\n var<\/span> key, regex, oldKey;\n while<\/span>(hitPayload.length >= maxLength && keys.length) {\n if<\/span> (key !== keys[0<\/span>]) {\n key = keys[0<\/span>];\n log('--> Removing &ilNpiN'<\/span> + key + ' from impression objects'<\/span>);\n }\n regex = new<\/span> RegExp<\/span>('&il\\\\d+pi\\\\d+'<\/span> + key + '=[^&]+'<\/span>, 'i'<\/span>);\n if<\/span> (!regex.test(hitPayload)) {\n keys.shift();\n }\n hitPayload = hitPayload.replace(regex, ''<\/span>);\n }\n log('--> New length: '<\/span> + hitPayload.length);\n return<\/span> hitPayload;\n };\n\n \/\/ If over payload length, remove default parameters.\n<\/span> if<\/span> (hitPayload.length >= maxLength) {\n log('Payload too long ('<\/span> + hitPayload.length + '), removing default keys...'<\/span>);\n hitPayload = removeKeys(hitPayload, defaultParams);\n }\n \/\/ If over payload length, remove custom dimensions.\n<\/span> if<\/span> (hitPayload.length >= maxLength) {\n log('Payload still too long ('<\/span> + hitPayload.length + '), removing Custom Dimensions...'<\/span>);\n hitPayload = removeKeys(hitPayload, customDims);\n }\n \/\/ If over payload length, clean up impression objects.\n<\/span> if<\/span> (hitPayload.length >= maxLength) {\n log('Payload still too long ('<\/span> + hitPayload.length + '), cleaning up Impressions...'<\/span>);\n hitPayload = removeImpressions(hitPayload, impressions);\n }\n \n \/\/ Send the modified payload.\n<\/span> sendModel.set('hitPayload'<\/span>, hitPayload, true<\/span>);\n originalSendHitTask(sendModel);\n });\n };\n}\n<\/code><\/pre>\n<\/div>\ndefaultParams<\/code>, customDims<\/code>, and impressions<\/code> arrays to include the keys you want to purge from the dataLayer<\/code>. Note that you will need to list the keys using their Measurement Protocol parameter names<\/a> rather than what their analytics.js<\/strong> field names are. So instead of 'encoding'<\/code><\/a>, for example, you need to use '&de'<\/code><\/a>.<\/p>\ndefaultParams<\/code> array are:<\/p>\n\n\n
\n \nKey<\/th>\n Name<\/th>\n Description<\/th>\n<\/tr>\n<\/thead>\n \n &je<\/code><\/td>\nJava Enabled<\/td>\n Whether the browser has enabled Java or not.<\/td>\n<\/tr>\n \n &de<\/code><\/td>\nDocument Encoding<\/td>\n What the character encoding of the current page is (e.g. UTF-8<\/code>).<\/td>\n<\/tr>\n\n &sd<\/code><\/td>\nScreen Colors<\/td>\n The screen color depth (e.g. 24-bits<\/code>).<\/td>\n<\/tr>\n\n &vp<\/code><\/td>\nViewport Size<\/td>\n The viewable area (in pixels) of the browser or device.<\/td>\n<\/tr>\n \n &sr<\/code><\/td>\nScreen Resolution<\/td>\n The screen resolution (in pixels) of the browser or device.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n &vp<\/code> or &sr<\/code>. Feel free to edit the defaultParams<\/code> array as you see fit.<\/p>\nimpressions<\/code> array, the syntax is slightly more complex. You should only<\/strong> add the actual parameter specifier, which is the key that comes after &ilNpiN<\/code>. So if the parameter name for Product Impression Variant is &il2pi1va<\/code>, you\u2019d type just 'va'<\/code> into the array. Or, if you wanted to purge the Product-Scoped Custom Dimension from index 3 from your impression objects, instead of typing '&il1pi1cd3'<\/code>, you\u2019d type 'cd3<\/code> into the array.<\/p>\ndefaultParams<\/code> and customDims<\/code> you need to type the full parameter name with<\/strong> the leading &<\/code>.<\/p>\nAdd the variable to your tag<\/h2>\n
Value<\/strong>: {{customTask – reduce payload length}}<\/p>\n
![\"Fields](\"https:\/\/www.simoahava.com\/images\/2018\/06\/fields-to-set.jpg#ZgotmplZ\")
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