#477 GUARD RING FOR PMOS Issue created by Ikram-rs22 The layout rules documentation specifies that N WELL, Active, nSD , cont and metal1 should be used for pmos guard ring. However, the nSD layer is shown to be invalid. [Image](https://private-user-images.githubusercontent.com/69266195/441206747-eb1d1c5e-cb36-467c-9469-d3d6ffc679a3.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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._0BSCDPkzkN-_sA0PZhBLVHgdzEToaZXD4b38_i5aQI) Is this a problem meaning this layer won't be fabricated or can I make it valid and use it. IHP-GmbH/IHP-Open-PDK