NLP Error Codes - All

Modified on Tue, Mar 4 at 4:09 PM

The table below is a complete list of NLP error codes, what they mean, and how to resolve.

Click here for a simplified list of the most common NLP error codes.

Click here for a list of NG Error Detail codes. NG decoders give these Error Details to provide additional context behind the standard "3000" Station Error.

Error Code	Decoder Types	Description	Possible causes	What to do?
400		Bad Request	The interface/controller cannot or will not process the request due to an apparent client error (e.g., malformed request syntax, size too large, invalid request message framing, or deceptive request routing).	Try again. If problem persists, contact Tucor NLP support.
401		Unauthorized	Similar to 403 Forbidden, but specifically for use when authentication is required and has failed or has not yet been provided.	Try again. If problem persists, contact Tucor NLP support.
403		Forbidden	The request contained valid data and was understood by the server, but the server is refusing action. This may be due to the user not having the necessary permissions for a resource or needing an account of some sort, or attempting a prohibited action (e.g. creating a duplicate record where only one is allowed).	Try again. If problem persists, contact Tucor NLP support.
404		Unknown Request	The requested resource could not be found.	Try again. If problem persists, contact Tucor NLP support.
408		Request Timeout	The interface/controller timed out waiting for the request. According to HTTP specifications: "The client did not produce a request within the time that the server was prepared to wait. The client MAY repeat the request without modifications at any later time."	Try again. If problem persists, contact Tucor NLP support.
500		Server Error	A generic error message, given when an unexpected condition was encountered, and no more specific message is suitable.	Try again. If problem persists, contact Tucor NLP support.
1000	ALL	2-Wire Timeout	A command was sent on the 2-Wire, but the decoder didn’t respond.	Locate the decoder. Place controller in short finding mode & check the decoder draw current. If problem persists, check for broken cable.
1001	ALL	2-Wire Communication Error	Communication with a decoder is disturbed.	Check integrity of the 2WP by checking the current draw is as-expected in short finding mode.
1002	ALL	2-Wire Not Operational	A command was sent to a decoder when the 2-Wire was not operational.	Check 2-Wire status.
1003	ALL	2-Wire Load Too High	Too many active decoders. Partial short of the 2-wire path. Faulty Decoder.	Turn off several decoders if too many are active. Check integrity of the 2WP. Locate the decoder.
2000	ALL	Object Not Found	An object doesn’t exist. It could be a station with a reference to a decoder, which has been deleted.	Check that the station, decoder, and IO are configured correctly.
2001	ALL	Object Exists	Trying to create a duplicate object.	Check for duplicates.
2002		Object Duplicate Key	Trying to create a duplicate key.
2003		Object Storage Full	Creating more objects than a certain object type accepts.
2004		Object Incomplete	Creating an object with an incomplete JSON format.
2005		Object Wrong Type	Creating an object with a wrong type. Patching an object with a wrong type.
2006		Object In Use	Deleting an object which is in use, e.g. an ioCfg which is used by a decoder.
2007		Object Active	Deleting an object which in use, e.g. a station which is running.
2050		Sub Object Not Found	Accessing a sub-object which doesn’t exist, e.g. a non-existing output index on a decoder.
2051		Sub Object Wrong Type	Creating a sub-object with a wrong type. Patching a sub-object with a wrong type.
2100		Data Parse Error	The data structure of the JSON object is incorrect. Could be because of FW version incompatibility.
2101		Data Type Error	Wrong data type is used, e.g. mismatch of strings and numbers.
2102		Data Constraint Error	Data outside range or invalid.
2103		Data Field Not Found	JSON object has wrong data fields.
3000	RK & LD	Line unit (decoder) failure detected	The verification of a command indicates an error.	Try again. If problem persists, check decoder and 2WP connections.
3000	NG	Line unit (decoder) error	The verification of a command indicates an error. The error is followed by additional information.	See NG Error Detail table. If problem persists, check decoder and 2WP connections.
3001	ALL	Line unit (decoder) non acknowledge	The command to a decoder was not accepted. E.g. an ON command to an output decoder already ON.	Try again. Perform the opposite action & try again. Disable ‘verify’ and/or enable ‘force’.
4000		File Deletion Failed	Deletion of file during FW upgrade	Perform a Factory Reset.
4001		File Write Error	File write error during FW upgrade	Perform a Factory Reset.
5000	ALL	IO Config Not Found	An IO config doesn’t exist. It could be a decoder with a reference to an IO config, which has been deleted or changed.	Check that the IO config exists. Try reapplying the IO config to the decoder.
5001		Flow Capacity Too Low	A part of the hydraulic system has too low capacity compared to the expected flow requested by a station start.	Check station flow rate, pipe capacity, and flow sensor config.
6001	ALL	Value Too Big	The diagnostic value was not measured in the decoder. Could be due to issues activating a solenoid.	Check solenoid & decoder. If problem persists, replace solenoid and/or decoder.
7000		Value Not Measured	Didn’t manage to find a stable flow within the stable count and stable max minutes.	Check flow rule config. Try later when flow is more stable.
7001		Flow Learn Timeout	Didn’t manage to find a stable flow within the stable count and stable max minutes.	Check flow rule config. Try later when flow is more stable.
7002		Flow too low	Flow is less than expected minus “Max low deviation (%)” after the start delay and change delay respectively.	Check station flow rate, pipe capacity, and flow config. Check for clogs.
7003		Flow too high	Flow is more than expected plus “Max high deviation (%)” after the start delay and change delay respectively.	Check station flow rate, pipe capacity, and flow config. Check for leaks.