Added new kb article dpl-licensing-warning-in-reporting (#1801)

* Added new kb article dpl-licensing-warning-in-reporting

* Update dpl-licensing-warning-in-reporting.md

* Update dpl-licensing-warning-in-reporting.md

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Co-authored-by: KB Bot <[email protected]>
Co-authored-by: Desislava Yordanova <[email protected]>
Co-authored-by: Dimitar Nikolov <[email protected]>

Author: 4 people

knowledge-base/dpl-licensing-warning-in-reporting.md

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+---
+title: Document Processing Libraries Licensing Warning in Telerik Reporting  
+description: Addressing licensing warnings related to Telerik Document Processing Libraries when using Telerik Reporting.  
+type: how-to  
+page_title: Fixing Telerik Document Processing Libraries Licensing Warning  
+meta_title: Fixing Telerik Document Processing Libraries Licensing Warning  
+slug: document-processing-libraries-licensing-warning  
+tags: reporting, licensing, dpl, document, processing, warning, tkl102, tkl101, tkl004  
+res_type: kb  
+ticketid: 1696546
+---
+
+## Environment  
+
+|Version|Product|Author| 
+|----|----|----| 
+|19.2.25.813|Telerik Reporting|[Desislava Yordanova](https://www.telerik.com/blogs/author/desislava-yordanova)| 
+
+## Description  
+
+After upgrading to **Q3 2025**, a licensing warning, related to [Telerik Document Processing Libraries](https://docs.telerik.com/devtools/document-processing/introduction), occurs while using Telerik Reporting. A valid Telerik Reporting license is available, but the Telerik Document Processing Libraries is not explicitly used in the project.  
+
+Possible warning messages:
+
+`Telerik and Kendo UI Licensing warning TKL101: Telerik Document Processing Libraries is not listed in your current license file.`
+
+`Telerik and Kendo UI Licensing warning TKL102: Your current license has expired and is not valid for Telerik Document Processing Libraries version 2025.2.807.20.`
+
+## Solution  
+
+This unexpected behavior was introduced with the 2025 Q3 release due to newly added DPL code that is being used internally. 
+
+The possible solution is to ignore the warning. If the project treats warnings as errors, add an exception to the rule in the csproj file.
+
+Follow the steps: 
+
+1. Ignore the warning if you are not explicitly using Telerik Document Processing Libraries outside of the Report Viewer.  
+1. If your project treats warnings as errors, add an exception to the rule in the `.csproj` file. Use the following configuration:  
+
+````XML  
+<PropertyGroup>  
+  <TreatWarningsAsErrors>true</TreatWarningsAsErrors>  
+  <NoWarn>TKL102;TKL004</NoWarn>  
+</PropertyGroup>  
+````
+
+>note This configuration suppresses the specific warnings `TKL102` and `TKL004` related to the Telerik Document Processing Libraries license not being found.  
+