7 min read<\/p>\n
5 min read<\/p>\n
The first CSRD audits for the 2025 financial year will be signed in the second quarter of 2026. In most DACH corporations, the auditor will sit down with IT executives for the first time and ask an uncomfortable question: Which system provides the server energy numbers, and who can verifiably prove it? If you can’t answer this question in two sentences, you have a data chain gap between asset register, electricity contract, and ESG report, and the finding will end up in the audit reservation.<\/strong><\/p>\n May 10, 2026<\/em><\/p>\n Key Takeaways<\/p>\n Related:<\/span>Sustainable IT 2026: CIOs under Scope 3 pressure<\/a>\/<\/span>The 40 percent question: Where the AI budget comes from<\/a><\/p>\n What is a CSRD assurance statement?<\/strong> A CSRD assurance statement is the external audit of sustainability reporting by an auditor within the framework of the EU’s Corporate Sustainability Reporting Directive. The audit covers information on Scope 1, Scope 2, and Scope 3 emissions, energy consumption, climate risks, and social indicators with limited assurance, and from 2028 with reasonable assurance.<\/p>\n In the first wave, the Big Four audit firms are using adapted assurance programs structurally close to the annual financial statement audit. This means specifically for IT: server power numbers must come from sources that are verifiable in a sample audit. Cloud emissions require a provider’s proof that matches the reporting cutoff. Device numbers must be reconciled with asset management.<\/p>\n The most common findings in the pilot assurance statements of recent months are not incorrect numbers, but a lack of traceability. A table was built from three tools, but no one can say which value was pulled on which date. Provider reports are available, but not versioned. Asset registers and power contracts are on different meter readings, without anyone having explained this in writing.<\/p>\n Boardroom Insight<\/p>\n From the completed pilot assurance statements, three recurring weak points can be reconstructed where the IT data chain breaks.<\/p>\n Firstly, the asset register. What is maintained in the CMDB system is rarely congruent with what actually runs in the server room. Devices are disposed of without the entry being removed, new hardware is added without appearing in the balance sheet. If the energy number is calculated per asset, this gap directly affects the ESG report. Pilot projects around Scope 3 emissions for CIOs<\/a> have shown this multiple times.<\/p>\n Secondly, the power contract. Colocation providers often calculate on a quarterly basis, some on an annual basis. If a monthly energy value is reported, it has either been estimated or derived from a sub-measurement that the auditor does not know. This is exactly where the question arises as to which date which value applies. Contracts with sub-metering must be explicitly referenced.<\/p>\n Thirdly, the ESG reporting tool. Most companies have introduced a specialized platform in preparation, often parallel to the existing BI landscape. Data flows between the ESG tool and CMDB are rarely documented, and mappings are manually maintained. If this cannot be shown in a data flow diagram, the company will receive one follow-up question after another during the audit.<\/p>\n Those who start now will have a robust data chain by the end of Q2.<\/p>\n The most common friction in the pilot audit was organizational. ESG managers often come from sustainability or finance, IT asset data resides in infrastructure, and power contracts are handled by procurement or facilities. If no one is responsible for the data chain as a whole, it will not be reliable.<\/p>\n In companies that passed the pilot audit without reservations, a designated person oversees this interface. The title is secondary, but often it’s a senior IT strategy lead or a sustainability-IT manager who reports directly to the CIO. This role has access to the CMDB, procurement, ESG tool, and auditor, and ultimately signs off on the data chain documentation. Without this person, the audit is a gamble.<\/p>\n Those who do not establish this role in 2026 will have to set it up under audit pressure in 2027. The difference is that preparation will then take place under the next reporting cycle, and the AI budget question<\/a> will simultaneously put pressure on the same IT team.<\/p>\n In Germany, large stock companies and large partnerships are required to report as of the 2025 financial year, if they exceed two of the following three thresholds: 250 employees, \u20ac50 million in revenue, \u20ac25 million in balance sheet total. The audit for this will be signed in spring 2026. Medium-sized businesses that have previously reported voluntarily usually fall under external review with limited assurance immediately.<\/p>\n<\/details>\n Limited assurance is a reduced audit depth compared to reasonable assurance in the HGB annual financial statement audit. The auditor formulates their opinion as a negative assurance: They have not found any indications that the information is incorrect. This may seem minimal, but it is enough to express reservations if the data chain is not verifiable. From 2028, CSRD requires reasonable assurance, with the same level of rigor as the balance sheet audit.<\/p>\n<\/details>\n In practice, cloud emissions end up in Scope 3 category 1 (purchased goods and services). AWS, Azure, and GCP now provide detailed reports with lifecycle values. Self-operated servers in own premises or colocation fall under Scope 2 (purchased energy). If workloads are distributed across multiple providers, a consolidated table and a clean reference to the provider records are required.<\/p>\n<\/details>\n In mid-sized setups with three to five cloud providers and a manageable on-premises landscape, this requires one to two person-months of effort for the first iteration. In the following year, this becomes a quarterly update with two to three person-days. The more expensive option is when documentation is created while the auditor is already on site and asking questions.<\/p>\n<\/details>\n About the Author<\/p>\n Eva Mickler<\/strong> is a Senior Project Manager at Evernine. She knows transformations where the method had a name and the result was a gap. She writes about projects where discipline makes the difference and calls out the places where theory meets operations.<\/p>\n<\/div>\n More from the MBF Media Network<\/p>\n Cloudflare Containers: When Workers Are Too Small<\/a><\/p>\n<\/div>\n Whistleblower Loophole: First Fines Imposed on Medium-Sized Businesses<\/a><\/p>\n<\/div>\n CSRD Requires Scope 3 IT Emissions: CIOs Under Pressure<\/a><\/p>\n<\/div>\n NIS2 Audit: Where the Vendor List Falls Apart in Two Hours<\/a><\/p>\n<\/div>\n<\/div>\n Image source: AI-generated (May 2026), C2PA certificate embedded in image<\/em><\/p>\n CSRD audit 2026: Where the IT data chain between asset register, electricity contract and ESG report breaks, and what auditors now find first.<\/p>\n","protected":false},"author":115,"featured_media":22047,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_focuskw":"CSRD audit IT data chain","_yoast_wpseo_title":"CSRD Audit: Where the IT Data Chain Breaks","_yoast_wpseo_metadesc":"CSRD audits in 2026 trip on broken IT data chains - asset registers, vendor contracts, and emission data. Three failure modes that show up before the auditor signs off.","_yoast_wpseo_opengraph-image":"https:\/\/www.digital-chiefs.de\/wp-content\/uploads\/2026\/05\/csrd-testat-it-datenchain-cio-audit-2026-cover-hero.png","_yoast_wpseo_opengraph-image-id":0,"_yoast_wpseo_twitter-image":"https:\/\/www.digital-chiefs.de\/wp-content\/uploads\/2026\/05\/csrd-testat-it-datenchain-cio-audit-2026-cover-hero.png","_yoast_wpseo_twitter-image-id":0,"featured_post_sortierung":0,"featured_post":0,"pre_headline":"","bildquelle":"","teasertext":"","language":"de","_evm_slot_owner":"","_evm_translation_lang":"","_wp_old_slug":["csrd","csrd-audit-where-the-it-data"],"footnotes":""},"categories":[703],"tags":[],"class_list":["post-22056","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-environment-sustainability","entry"],"wpml_language":"en","wpml_translation_of":22043,"yoast_head":"\n\n
What is actually audited in the first CSRD assurance statement<\/h2>\n
Three gaps that the auditor finds first<\/h2>\n
The 90-Day Plan Before the Audit<\/h2>\n
Who is Responsible for the IT Data Chain<\/h2>\n
Frequently Asked Questions<\/h2>\n
Which companies are required to comply with CSRD for the first time in 2026?<\/strong><\/summary>\n
What is limited assurance and how does it differ from the annual financial statement audit?<\/strong><\/summary>\n
Should cloud emissions be reported under Scope 2 or Scope 3?<\/strong><\/summary>\n
How time-consuming is data chain documentation in practice?<\/strong><\/summary>\n
Read more<\/h3>\n
\n