Error codes XML API v1

If an error occurs while executing the request, the server responds in the following format:

<?xml version="1.0" encoding="UTF-8"?>
<response status="error">
  <code></code>
</response>

Name	Type	Meaning	Note
code	string(4)	Four-digit number, can start with zero, error code.

Unclassified

0001 - Incorrect API Key
0002 -The application is blocked
0003 - XML parsing error. Invalid XML
0004 - Unknown account
0005 - Session key is invalid (session has expired)
0006 - Incorrect signature
0007 - Resource usage limit exceeded (maximum daily request limit exceeded)
0008 - Function name is not recognized
0009 - One of the required function parameters is missing
0010 - The account is frozen
0011 - Software update is in progress on the account platform
0012 - Authentication error: when logging in with username and password - session is missing, session parameter is not provided in the request; when logging in with a token - the provided token does not exist
0013 - Undefined user
0014 - User is inactive
0015 - Invalid parameter value
0016 - In this context, the parameters cannot accept provided value
0017 - Value is missing for a dependent parameter
0018 - Function/functionality is not implemented
0019 - Conflict between specified parameters
0020 - Unauthorized to perform the requested function
0021 - The requested number of objects exceeds the maximum allowed for this function
0022 - API usage is not available for free accounts
0023 - The requested action is not possible within the current account's plan
0024 - The account is located in a different data center, please check the request URL
0101 - The requested object does not exist
0102 - Error adding the object
0103 - Error updating the object
0104 - Access to data is denied
0105 - No permission to edit the object

1001 - incorrect login or password
1002 - The request cannot be executed due to insufficient permissions (privileges)

2001 - The requested project does not exist
2002 - The request cannot be executed due to insufficient permissions (privileges)
2003 - Error adding the project

3001 - The specified task (or another requested object) does not exist
3002 - No access to the task
3003 - The project within which the task is created does not exist
3004 - The project within which the task is created is not available
3005 - Error adding the task
3006 - The "Start working" time cannot be later than the "Finish by" time
3007 - Invalid recurrence, likely multiple conflicting parameters are specified or none at all
3008 - No access to the task
3009 - No access to modify task data
3010 - This task cannot be declined (likely it's already accepted by this user)
3011 - This task cannot be accepted (likely it's already accepted by this user)
3012 - The user making the request is not the task assignee
3013 - The task is not accepted (to perform this function, the task must be accepted)
3014 - The task is being modified (by script or another API request). Please retry the request after some time.

4001 - The request cannot be executed due to insufficient permissions (privileges)
4002 - The action does not exist
4003 - Error adding the action
4004 - Error updating the data
4006 - Attempt to change the status to an unauthorized one
4007 - Changing status is prohibited in this action
4008 - No access to the comment/action
4009 - No access to the task
4010 - The specified data tag does not exist
4011 - Not all fields were provided for the data tag
4012 - An invalid parameter was specified for the data tag
4013 -The provided data does not match the field type
4014 - The specified directory key cannot be used
4015 -The specified reference key is invalid
4016 - The specified data field key does not belong to the specified data tag

5001 - The specified user group does not exist
5002 - The request cannot be executed due to insufficient permissions (privileges)
5003 - Error adding the group

6001 - The request cannot be executed due to insufficient permissions (privileges)
6002 - This email is already in use
6003 - Error adding the employee
6004 - The user does not exist
6005 - Error updating the data
6006 - The identifier for a non-existing user group is specified

7001 - The request cannot be executed due to insufficient permissions (privileges)
7002 - The customer does not exist
7003 - Error adding the customer
7004 - Error updating the data

8001 -The request cannot be executed due to insufficient permissions (privileges)
8002 - The contact does not exist
8003 - Error adding the contact
8004 - Error updating the data
8005 - The contact has not activated access to Planfix
8006 - Access to Planfix has not been granted to the contact
8007 - The email specified for login is already taken
8008 - Attempt to set a password for a contact who has not activated access to Planfix
8009 - Error updating login data
8010 - An incorrect email address is specified

9001 - The request cannot be executed due to insufficient permissions (privileges)
9002 - The requested file does not exist
9003 - Error uploading the file
9004 - Attempt to upload an empty list of files
9005 - Invalid character in the file name
9006 - The file name is already taken
9007 - File system error
9008 - An error occurs when trying to add a file from one project to another
9009 - The file being added to the task is a file from another project

10001 - The request cannot be executed due to insufficient permissions (privileges)
10002 - The data tag does not exist
10003 - The passed parameter for the data tag group does not exist
10004 - The passed parameter for data tag directory does not exist