Informational RSS feed for IT changes

Final Version XML Message Formats, XSD, WSDL Templates to be deployed on January 20 2026

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Extraordinary System Maintenance: OTE, December 2025

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Planned OTE Systems Outage 25 November 2025

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XML Message Formats, XSD Templates for suggestions

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The time change on October 26th 2025

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Notice of Temporary Unavailability of the Test Environment on August 21, 2025

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Notice of Temporary Unavailability of the Test Environment on 08/08/2025

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Temporary unavailability of sandbox2 environment

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Final Version XML Message Formats, XSD, WSDL Templates to be deployed on June 24 2025

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The shutdown of CS OTE Sandbox environment 13.6.2025 12:00 - 04:00

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Changes in the OTE Web Services User Manual

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XML Message Formats, XSD Templates for suggestions

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Final Version XML Message Formats, XSD Templates

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Using "namespace" in XML messages communicated with CS OTE

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Temporary Unavailability of the Sandbox Testing Environment

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Regular Maintenance of the OTE Production System – Changes to the Login Page and the Registration Section

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Information on planned annual consumption for metering type C category C1 to C3

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Update to OTE System Interface – User Information

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Using "namespace" in XML messages communicated with CS OTE

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Planned Update of the Sandbox Test Environment – Thursday, April 3, 2025

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Final Version XML Message Formats, XSD Templates

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Planned Extraordinary Outage of the OTE Trading System on 18.03.2025

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Planned outage of the OTE trading system on February 18, 2025

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Final Version XML Message Formats, XSD Templates

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XML message formats, XSD templates for suggestions

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Temporary Unavailability of Sandbox Testing Environments on 29/01/2025

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Notice of data format change from XLS to XLSX on OTE website

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XML message formats, XSD templates valid from 21.01.2025

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Update of WSDL Templates

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Change of Data Format from XLS to XLSX on the OTE Website Effective December 17, 2024

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