# Type node implementing **URL:** \ **Category:** Node Development\ **Created:** [June 26, 2019, 6:18pm UTC](https://forum.knime.com/t/type-node-implementing/15615 "2019-06-26T18:18:07Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Taday](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/t/ce7236/32.png) [@Taday](https://forum.knime.com/u/Taday)\ **Post date:** [June 26, 2019, 6:18pm UTC](https://forum.knime.com/t/type-node-implementing/15615/1 "2019-06-26T18:18:07Z")
Hello, I’m implementing a node in knime that what you do is from a configuration you get data that can be processed, but I do not know what type the node is because it does not match any of the specifications of the blue nodes, red, yellow, carmelite, green. I think it’s orange but I do not have the specification of this type of node. Can somebody help me? ---
**Author:** ![swebb](https://forum-cdn.knime.com/user_avatar/forum.knime.com/swebb/32/369_2.png) [@swebb](https://forum.knime.com/u/swebb)\ **Post date:** [June 26, 2019, 10:11pm UTC](https://forum.knime.com/t/type-node-implementing/15615/2 "2019-06-26T22:11:17Z")
If I recall correctly you want Source for input (reader) and Sink for output (writer). If you’re using the node creation wizard don’t worry too much about making a bad choice as you can change this in the node xml file later anyway. ---
**Author:** ![Taday](https://forum-cdn.knime.com/letter_avatar_proxy/v4/letter/t/ce7236/32.png) [@Taday](https://forum.knime.com/u/Taday)\ **Post date:** [June 27, 2019, 3:20am UTC](https://forum.knime.com/t/type-node-implementing/15615/3 "2019-06-27T03:20:06Z")
Ok but I need to document my choice, and I wanted to know the precise specifications for this type of node. ---
**Author:** ![Vernalis](https://forum-cdn.knime.com/user_avatar/forum.knime.com/vernalis/32/356_2.png) [@Vernalis](https://forum.knime.com/u/Vernalis)\ **Post date:** [June 27, 2019, 8:22am UTC](https://forum.knime.com/t/type-node-implementing/15615/4 "2019-06-27T08:22:09Z")
Apart from consistency of appearance with other nodes, I don’t think the type makes any difference to the node itself. It sounds like a source node from your description, by comparison with e.g. the Database nodes, which are almost all source nodes even though some of them have predecessor nodes. Steve ---
**Author:** ![system](https://forum-cdn.knime.com/uploads/default/original/1X/ab3ccf34482a0329361734a18199390177204f15.png) [@system](https://forum.knime.com/u/system)\ **Post date:** [June 23, 2023, 8:33pm UTC](https://forum.knime.com/t/type-node-implementing/15615/5 "2023-06-23T20:33:56Z")