Optimization Solver:Common error codes

Error code

Description

Solution

-1

Unspecified internal error.

Check whether this is a secondary error code. See the License error codes section below. If you confirm it is a primary error, contact us.

-2

Out of memory.

Increase the memory or reduce the scale of the optimization problem.

-3

Invalid parameter.

Check the input parameters.

-10

Invalid license.

• Check whether the license is set correctly. For secondary error codes, see the License error codes section below. For information about license configuration, see 4. Configure authentication files.

• If you use a solver of version 0.20.0 or later to solve Mixed-Integer Linear Programming (MILP) problems, you must apply for the required permissions by email. For more information, see Download V0.20.0.

-11

The environment variable MINDOPT_HOME was not found.

Set the environment variable as instructed in 3. Check environment variables and perform a test run.

-12

Failed to load the MindOpt dynamic library.

Check the dynamic library. If necessary, reinstall the software package.

-1000

I/O communication error.

Check the file input and output.

-1001

Failed to read data from the file.

Check whether the file to be read is correct.

-1002

Failed to write data to the file.

Check whether the data to be written is correct and whether you have write permissions.

-1003

Path error.

Check whether the path exists and whether you have write permissions.

-1100

File parsing error.

Check whether the file to be parsed is correct.

-1200

The token ID entered for the remote computing service is invalid.

Check whether the token ID is valid and entered correctly.

-1201

Failed to connect to the remote computing server.

Check whether the remote computing server address is correct and the network connection is stable.

-2000

Error inputting or reading the optimization model.

Check whether the optimization model is correct.

-2001

The optimization model is empty.

Check whether the optimization model was entered correctly.

-2002

Invalid row index for the model.

Check whether the referenced row index is within the valid range.

-2003

Invalid column index for the model.

Check whether the referenced column index is within the valid range.

-2004

Invalid row name for the model.

Check whether the referenced row name is correct.

-2005

Invalid column name for the model.

Check whether the referenced column name is correct.

-2006

Invalid index for the symmetric matrix.

Check the input data.

-2007

Invalid row index for the symmetric matrix.

Check the input data.

-2008

Invalid column index for the symmetric matrix.

Check the input data.

-2010

Unrecognized string attribute.

Check whether the model's string attribute API is used correctly.

-2011

Unrecognized integer attribute.

Check whether the model's integer attribute API is used correctly.

-2012

Unrecognized real number attribute.

Check whether the model's real number attribute API is used correctly.

-2013

Unrecognized real number attribute for the symmetric matrix.

Check the input data.

-3000

The solution to the problem is unavailable.

Check whether the solution to the optimization problem was generated correctly.

-3001

The primal ray is unavailable.

Check whether the primal ray was generated correctly.

-3002

The solver statistics are unavailable.

Contact us.

-3003

Unrecognized basis status value.

Check whether the basis status value is set correctly.

-3004

The Irreducible Inconsistent Subsystem (IIS) is unavailable for the current model.

You cannot call IIS. Check whether the problem type is supported.

-3005

The IIS is inactive for the solvable model.

The problem is feasible. No IIS exists.

-4000

Error setting a parameter.

Check whether the parameter setting API is used correctly.

-4001

Error getting a parameter.

Check whether the parameter retrieval API is used correctly.

-9000

The maximum number of iterations was reached.

Check whether the maximum number of iterations is set correctly.

-9001

The maximum solving time was reached.

Check whether the maximum solving time is set correctly.

-9002

The solving process was interrupted by a Ctrl+C command.

Check whether the process was interrupted by a Ctrl+C command.

-9003

The node limit was reached.

Check the node limit setting.

-9004

The limit for consecutive nodes without finding a better solution was exceeded.

The solving process failed. Check the problem model, or contact us.

-9011

The selected optimization algorithm is not supported.

Check the solving method settings and the license scope. Check for new versions, or contact us.

-9012

The solver does not support the input problem.

Check the file. Check for new version releases, or contact us.

-10000 ~ -19999

Numerical error in the simplex method.

Contact us.

-20000 ~ -29999

Numerical error in the interior-point method.

Contact us.

-30000

A numerical error occurred while computing the IIS.

Contact us.

Error code

Problem description

Solution

-1

Request timed out.

Check whether you are connected to the internet and whether the network is stable. You can also increase the timeout period in the configuration file (default: 2 seconds). For more information, see 3. Use an Alibaba Cloud license key for authentication.

-2

Failed to create a socket.

Check the network connection.

-3

Failed to set the socket to non-blocking mode.

Check the network connection.

-4

Failed to parse the host.

Check the network connection. Then, check whether `server.name` is correctly configured in the configuration file. For more information, see 3. Use an Alibaba Cloud license key for authentication.

-5

Connection failed.

Check the network connection.

-6

Write request failed.

Check the network connection.

-7

Read request failed.

Check the network connection.

-200

Configuration file error.

Check the configuration file. For more information, see 3. Use an Alibaba Cloud license key for authentication.

-201

URL error.

Check whether `server.name` is correctly configured in the configuration file. For more information, see 3. Use an Alibaba Cloud license key for authentication.

500

Internal server-side exception.

• If you use a solver of version 0.20.0 or later to solve MILP problems, you must apply for the required permissions by email. For more information, see Download V0.20.0.

If the issue persists, contact us.

400

Invalid request format.

• Check whether the `fl_client.ini` license file is complete, whether the content for `xxx` has been modified, and whether the `ak_id` and `ak_secret` are correct and valid. For more information, see 3. Use an Alibaba Cloud license key for authentication.

• Check the integrity of the installation package. For example, download and install the package again.

If the issue persists, contact us.

401

Unauthorized. The LicenseKey failed verification.

Check whether the LicenseKey belongs to the Alibaba Cloud account that corresponds to the AccessKey. You can view the LicenseKey in the console > Purchased Services.

410

The resource has expired.

The configured LicenseKey has expired. Go to the console > Overview page to renew it.

409

Insufficient concurrency.

The number of concurrent tasks has reached the maximum limit allowed by the purchased LicenseKey. If the concurrency is insufficient, go to the console > Overview page to change the configuration.

Note that completed tasks must be released promptly. For long-running tasks, you can set `MaxTime` to limit the total time consumed and release the concurrent resources right away.

Normally, concurrency is automatically released after the solver program exits. However, if the program terminates abnormally, such as a crash, the concurrency is not automatically released. You can manually release it from the console or wait for the connection to time out for automatic release.

403

No permission.

Check whether the Alibaba Cloud account has granted permissions to the RAM user. In the Alibaba Cloud account's authorization settings, search for "opt" to query the relevant permissions.