The Unit Test Framework VIs can return the following error codes. Refer to the KnowledgeBase for more information about correcting errors in LabVIEW.

Code Description
−25288 Cannot access a shared variable.
−25287 An error occurred when creating test(s).
−25286 This VI does not have a block diagram.
−25285 Cannot execute tests while related VIs are running, including the VI under test, setup VI, teardown VI, user-defined comparison VI, and user-defined test VI.
−25284 This VI is in a locked library. Unlock the library or add the password in the Project Properties dialog box.
−25283 This VI is password-protected. Unlock the VI or add the password in the Project Properties dialog box.
−25282 The path to the user-defined test VI is invalid.
−25262 The user-defined comparison VI is invalid.
−25261 The path to the user-defined comparison VI is invalid.
−25260 The .lvtest file is read-only.
−25259 The .lvtest file is invalid.
−25258 Test Case Data Error
−25257 Test Case Data Missing
−25256 An error occurred while setting input values to the VI under test.
−25253 If the VI under test is a reentrant VI, a dynamic dispatch member VI, a subroutine VI, or executes on a real-time (RT) target, LabVIEW can compare only the indicators on the connector pane or global variables.
−25252 If the VI under test is a reentrant VI, a dynamic dispatch member VI, a subroutine VI, or executes on a real-time (RT) target, LabVIEW can set values only to controls on the connector pane or to global variables.
−25251 LabVIEW cannot find the following control(s).
−25250 The .lvtest file header information contains an error.
−25249 The following control name is not unique.
−25248 The control name cannot contain the following: \n, \r, tabs, array brackets, name separators, and decimal separators.
−25245 An error occurred when running the setup and teardown VIs.
−25244 The configuration between setup VI, teardown VI, and VI under test is invalid.
−25242 The user-defined test VI is invalid.
−25241 The VI under test is invalid.
−25240 The path to the VI under test is invalid.
−25232 An error occurred with the teardown VI.
−25231 The teardown VI is invalid.
−25230 The path to the teardown VI is invalid.
−25222 LabVIEW cannot find the following terminal(s).
−25221 The setup VI is invalid.
−25220 The path to the setup VI is invalid.
−25204 Cannot load the class. Save the class before loading or executing tests.
−25201 Cannot open multiple instances of the Unit Test Framework Results window. Close the window before executing tests.
−25200 An unknown error occurred.