# Error: READ\_INP ERROR while reading block with keyword 'auxiliary\_history\_fields' **URL:** \ **Category:** biogeochemistry\ **Tags:** biogeochemistry\ **Created:** [June 29, 2022, 9:17am UTC](https://forum.croco-ocean.org/t/error-read-inp-error-while-reading-block-with-keyword-auxiliary-history-fields/372 "2022-06-29T09:17:07Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![ify](https://forum.croco-ocean.org/letter_avatar_proxy/v4/letter/i/a88e4f/32.png) [@ify](https://forum.croco-ocean.org/u/ify)\ **Post date:** [June 29, 2022, 9:17am UTC](https://forum.croco-ocean.org/t/error-read-inp-error-while-reading-block-with-keyword-auxiliary-history-fields/372/1 "2022-06-29T09:17:07Z")
Hello everyone, I am trying to configure CROCO for a test case with the simple biogeochemical model BIO\_NChlPZD. I already made all my files correctly and all seem to work well. However, when I try to run the model after compilation. I had this error: ``` READ_INP ERROR while reading block with keyword 'auxiliary_history_fields'. READ_INP ERROR: A total of 1 configuration errors discovered. ``` I’m not sure where the problem lies for this simple case. Has anyone encountered such problem before? I will be glad to be pointed to the right direction to solve this problem. I copy my croco.in and cppdefs.h file here. [cppdefs.h](https://forum.croco-ocean.org/uploads/default/original/1X/522a37aebd4aa44d97f8a048d29e35134c34b729.h) [croco.in](https://forum.croco-ocean.org/uploads/default/original/1X/4986dbd629afb091f9bfcbbd8cd0ffd39b4e1822.in) ---
**Author:** ![AndresSepulveda](https://forum.croco-ocean.org/user_avatar/forum.croco-ocean.org/andressepulveda/32/262_2.png) [@AndresSepulveda](https://forum.croco-ocean.org/u/AndresSepulveda)\ **Post date:** [July 4, 2022, 4:42pm UTC](https://forum.croco-ocean.org/t/error-read-inp-error-while-reading-block-with-keyword-auxiliary-history-fields/372/2 "2022-07-04T16:42:11Z")
Hi, What version of CROCO are you using? Have you tried with the Benguela test case? ---
**Author:** ![ify](https://forum.croco-ocean.org/letter_avatar_proxy/v4/letter/i/a88e4f/32.png) [@ify](https://forum.croco-ocean.org/u/ify)\ **Post date:** [July 4, 2022, 6:24pm UTC](https://forum.croco-ocean.org/t/error-read-inp-error-while-reading-block-with-keyword-auxiliary-history-fields/372/3 "2022-07-04T18:24:18Z")
Hi Andres, I am using the V1.2. As a matter of fact, I’m following your tutorial when I encountered the error. Still haven’t solved it yet. ---
**Author:** ![AndresSepulveda](https://forum.croco-ocean.org/user_avatar/forum.croco-ocean.org/andressepulveda/32/262_2.png) [@AndresSepulveda](https://forum.croco-ocean.org/u/AndresSepulveda)\ **Post date:** [July 4, 2022, 8:16pm UTC](https://forum.croco-ocean.org/t/error-read-inp-error-while-reading-block-with-keyword-auxiliary-history-fields/372/4 "2022-07-04T20:16:19Z")
Ok, great. Which tutorial in particular? ---
**Author:** ![ify](https://forum.croco-ocean.org/letter_avatar_proxy/v4/letter/i/a88e4f/32.png) [@ify](https://forum.croco-ocean.org/u/ify)\ **Post date:** [July 4, 2022, 8:23pm UTC](https://forum.croco-ocean.org/t/error-read-inp-error-while-reading-block-with-keyword-auxiliary-history-fields/372/5 "2022-07-04T20:23:38Z")
Tutorial 5 (Biogeochemical simulation). I think that’s the basic tutorial. ---
**Author:** ![AndresSepulveda](https://forum.croco-ocean.org/user_avatar/forum.croco-ocean.org/andressepulveda/32/262_2.png) [@AndresSepulveda](https://forum.croco-ocean.org/u/AndresSepulveda)\ **Post date:** [July 4, 2022, 8:56pm UTC](https://forum.croco-ocean.org/t/error-read-inp-error-while-reading-block-with-keyword-auxiliary-history-fields/372/6 "2022-07-04T20:56:57Z")
Try this. Replace 10_T with 30_T in the line below auxiliary\_history\_fields and also for the line below auxiliary\_averages ---
**Author:** ![ify](https://forum.croco-ocean.org/letter_avatar_proxy/v4/letter/i/a88e4f/32.png) [@ify](https://forum.croco-ocean.org/u/ify)\ **Post date:** [July 4, 2022, 9:08pm UTC](https://forum.croco-ocean.org/t/error-read-inp-error-while-reading-block-with-keyword-auxiliary-history-fields/372/7 "2022-07-04T21:08:50Z")
It works like charm. What difference does 10 and 30\*T makes. Is the difference because I have additional tracers? Thanks Andres ---
**Author:** ![AndresSepulveda](https://forum.croco-ocean.org/user_avatar/forum.croco-ocean.org/andressepulveda/32/262_2.png) [@AndresSepulveda](https://forum.croco-ocean.org/u/AndresSepulveda)\ **Post date:** [July 4, 2022, 9:37pm UTC](https://forum.croco-ocean.org/t/error-read-inp-error-while-reading-block-with-keyword-auxiliary-history-fields/372/8 "2022-07-04T21:37:17Z")
Yes, it expects more logical values (T or F) for the extra tracers. I think this is fixes in the latest version. Glad that it works now. Any comments on the tutorial are very much welcomed! ---
**Author:** ![ify](https://forum.croco-ocean.org/letter_avatar_proxy/v4/letter/i/a88e4f/32.png) [@ify](https://forum.croco-ocean.org/u/ify)\ **Post date:** [July 5, 2022, 7:41am UTC](https://forum.croco-ocean.org/t/error-read-inp-error-while-reading-block-with-keyword-auxiliary-history-fields/372/9 "2022-07-05T07:41:30Z")
Thanks once again.