# Bug Reports **URL:** https://forum.sensmetry.com/c/syside/bug-reports/5.md [Latest](https://forum.sensmetry.com/latest.md) · [Categories](https://forum.sensmetry.com/categories.md) · [Tags](https://forum.sensmetry.com/tags.md) --- ## [Feature resolution depends on the order of specializations (redefines vs. subsets) Environment](https://forum.sensmetry.com/t/feature-resolution-depends-on-the-order-of-specializations-redefines-vs-subsets-environment/596)
**Author:** [@Hormo](https://forum.sensmetry.com/u/Hormo)\ **Replies:** 1\ **Last updated:** [October 21, 2026, 10:04am UTC](https://forum.sensmetry.com/t/feature-resolution-depends-on-the-order-of-specializations-redefines-vs-subsets-environment/596 "2026-10-21T10:04:21Z")
Syside 0.11.0 (CLI syside 0.11.0 18800c5, Python package syside==0.11.0) macOS (Apple Silicon) Summary A usage has two specializations: it redefines one feature and subsets another. A nested feature it inherits is red… --- ## [Filter istype drops elements that carry user metadata (table export)](https://forum.sensmetry.com/t/filter-istype-drops-elements-that-carry-user-metadata-table-export/595)
**Author:** [@Hormo](https://forum.sensmetry.com/u/Hormo)\ **Replies:** 3\ **Last updated:** [October 19, 2026, 7:25am UTC](https://forum.sensmetry.com/t/filter-istype-drops-elements-that-carry-user-metadata-table-export/595 "2026-10-19T07:25:34Z")
Versions: Syside 0.11.0 (syside-modeler, build 18800c5), sensmetry-syside-views 0.11.0, macOS. Summary: In syside-modeler table export, a view filter filter istype SysML::RequirementUsage excludes requirement usages tha… --- ## [Recommended improvement for example at https://docs.sensmetry.com/examples/reqs\_from\_excel/](https://forum.sensmetry.com/t/recommended-improvement-for-example-at-https-docs-sensmetry-com-examples-reqs-from-excel/594)
**Author:** [@Richard\_Wallace](https://forum.sensmetry.com/u/Richard_Wallace)\ **Replies:** 0\ **Last updated:** [October 15, 2026, 9:06pm UTC](https://forum.sensmetry.com/t/recommended-improvement-for-example-at-https-docs-sensmetry-com-examples-reqs-from-excel/594 "2026-10-15T21:06:45Z")
Howdy all, In the Python example at Requirements from Excel spreadsheet — Syside, the Python code does a very good job of keeping defaults from interfering with the file I/O. That is, until the last write operation, whe… --- ## [Example for syside solver evaluate for the battery example has errors](https://forum.sensmetry.com/t/example-for-syside-solver-evaluate-for-the-battery-example-has-errors/589)
**Author:** [@Richard\_Wallace](https://forum.sensmetry.com/u/Richard_Wallace)\ **Replies:** 1\ **Last updated:** [October 15, 2026, 12:20am UTC](https://forum.sensmetry.com/t/example-for-syside-solver-evaluate-for-the-battery-example-has-errors/589 "2026-10-15T00:20:47Z")
For the battery.sysml example used in syside solver evaluate example on the Evaluating possible values — Syside webpage. Values are produced that are not correct for SysML v2 syntax and datatypes. Given (from the Sensm… --- ## [Solver documentation bug or Windows restriction](https://forum.sensmetry.com/t/solver-documentation-bug-or-windows-restriction/577)
**Author:** [@Richard\_Wallace](https://forum.sensmetry.com/u/Richard_Wallace)\ **Replies:** 2\ **Last updated:** [October 8, 2026, 9:38pm UTC](https://forum.sensmetry.com/t/solver-documentation-bug-or-windows-restriction/577 "2026-10-08T21:38:57Z")
Hi, After successfully installing the solver utility, I ran it with the documented options and got two errors/restrictions on Windows for --show-completion and --install-completion. All options worked in the bash shell… --- ## [Syside solver and use of jq or Powershell formatting does not match web examples](https://forum.sensmetry.com/t/syside-solver-and-use-of-jq-or-powershell-formatting-does-not-match-web-examples/582)
**Author:** [@Richard\_Wallace](https://forum.sensmetry.com/u/Richard_Wallace)\ **Replies:** 6\ **Last updated:** [October 5, 2026, 3:03pm UTC](https://forum.sensmetry.com/t/syside-solver-and-use-of-jq-or-powershell-formatting-does-not-match-web-examples/582 "2026-10-05T15:03:03Z")
Hi, Issues with the solver and jq noted. Please let me know if you can duplicate or if I’ve done something wrong. Thanks. Not being a wizard with jq, but only following the webpage examples at Reading the solver’s ou… --- ## [Failure to flag errors from Syside - An occurrence, item or part must be typed by occurrence definitions. - Duplicate of inherited member name 'self'](https://forum.sensmetry.com/t/failure-to-flag-errors-from-syside-an-occurrence-item-or-part-must-be-typed-by-occurrence-definitions-duplicate-of-inherited-member-name-self/578)
**Author:** [@Richard\_Wallace](https://forum.sensmetry.com/u/Richard_Wallace)\ **Replies:** 17\ **Last updated:** [September 28, 2026, 6:52am UTC](https://forum.sensmetry.com/t/failure-to-flag-errors-from-syside-an-occurrence-item-or-part-must-be-typed-by-occurrence-definitions-duplicate-of-inherited-member-name-self/578 "2026-09-28T06:52:14Z")
I’ve noticed many semantic issues with Syside. Here is one that didn’t show up, which is insidious. Given the specification: //\*\* \* To fulfill the Return-to-Home (RTH) automated flight management requirements specifi… --- ## [Not possible to visualize activity diagram?](https://forum.sensmetry.com/t/not-possible-to-visualize-activity-diagram/326)
**Author:** [@Vaclav\_Barta](https://forum.sensmetry.com/u/Vaclav_Barta)\ **Replies:** 7\ **Last updated:** [September 24, 2026, 6:47am UTC](https://forum.sensmetry.com/t/not-possible-to-visualize-activity-diagram/326 "2026-09-24T06:47:06Z")
It seems that it is not possible to visualize action flows, is that right? --- ## [Syside example has odd syntax (affects syside and solver)](https://forum.sensmetry.com/t/syside-example-has-odd-syntax-affects-syside-and-solver/581)
**Author:** [@Richard\_Wallace](https://forum.sensmetry.com/u/Richard_Wallace)\ **Replies:** 1\ **Last updated:** [September 24, 2026, 6:13am UTC](https://forum.sensmetry.com/t/syside-example-has-odd-syntax-affects-syside-and-solver/581 "2026-09-24T06:13:53Z")
In syside-solver 0.10.3, the example for package Pump has some odd syntax for scope resolution. In the example given at Checking that requirements hold — Syside package Pump { private import ScalarValues::Integer; … --- ## [Solver installation documentation](https://forum.sensmetry.com/t/solver-installation-documentation/576)
**Author:** [@Richard\_Wallace](https://forum.sensmetry.com/u/Richard_Wallace)\ **Replies:** 1\ **Last updated:** [September 15, 2026, 1:34am UTC](https://forum.sensmetry.com/t/solver-installation-documentation/576 "2026-09-15T01:34:29Z")
Hi, There may be a documentation issue with the instructions for downloading and installing the syside solver. On the web page Solver — Syside : Using the command on Windows as written gives an error. Replacing th… --- ## [Redefinition referencing behavior](https://forum.sensmetry.com/t/redefinition-referencing-behavior/574)
**Author:** [@jbussemaker](https://forum.sensmetry.com/u/jbussemaker)\ **Replies:** 5\ **Last updated:** [September 9, 2026, 12:44pm UTC](https://forum.sensmetry.com/t/redefinition-referencing-behavior/574 "2026-09-09T12:44:55Z")
Hi everyone, Consider the following model: package Package { part def BasePart { attribute attr1 default 5.0; attribute attr2 default 42.0; } part def SpecialPart :\> BasePart { attri… --- ## [Interface example parsing error, end feature must have exactly one type](https://forum.sensmetry.com/t/interface-example-parsing-error-end-feature-must-have-exactly-one-type/573)
**Author:** [@joModel](https://forum.sensmetry.com/u/joModel)\ **Replies:** 4\ **Last updated:** [September 8, 2026, 12:03pm UTC](https://forum.sensmetry.com/t/interface-example-parsing-error-end-feature-must-have-exactly-one-type/573 "2026-09-08T12:03:21Z")
Hi, I have in my model a problem with an interface. I can reproduce the error from an example from the Sysml v2 standard. The linked help page shows another error (association-end-types — Syside). I think this is a bug. … --- ## [\[⚠️HELP\] Problem displaying French Accentuated or Special Characters (Mojibake encoding mismatch?)](https://forum.sensmetry.com/t/help-problem-displaying-french-accentuated-or-special-characters-mojibake-encoding-mismatch/563)
**Author:** [@NSA](https://forum.sensmetry.com/u/NSA)\ **Replies:** 2\ **Last updated:** [August 29, 2026, 4:11pm UTC](https://forum.sensmetry.com/t/help-problem-displaying-french-accentuated-or-special-characters-mojibake-encoding-mismatch/563 "2026-08-29T16:11:28Z")
Hello, I am using Syside Modeler: SysML v2 Professional sensmetry.syside-modeler Version 0.10.3 I have some text in French language including accentuated characters (e.g. “décrire”). I tried different encoding (UTF-8… --- ## [Standalone user-defined keyword doesn't work as expected](https://forum.sensmetry.com/t/standalone-user-defined-keyword-doesnt-work-as-expected/566)
**Author:** [@gwagner](https://forum.sensmetry.com/u/gwagner)\ **Replies:** 4\ **Last updated:** [August 27, 2026, 9:05am UTC](https://forum.sensmetry.com/t/standalone-user-defined-keyword-doesnt-work-as-expected/566 "2026-08-27T09:05:15Z")
According to the SysML2 spec (7.27.4), a user-defined keyword may also be used without using any language-defined keyword, like using #instact def ProcessingStart; instead of #instact action def ProcessingStart; Howe… --- ## [Indexed ports](https://forum.sensmetry.com/t/indexed-ports/560)
**Author:** [@Steven](https://forum.sensmetry.com/u/Steven)\ **Replies:** 3\ **Last updated:** [August 21, 2026, 5:57am UTC](https://forum.sensmetry.com/t/indexed-ports/560 "2026-08-21T05:57:02Z")
I am trying to get indexed ports working but seem to be failing. ref port GPIO : Interfaces::GPIOPort\[32\]; ref connection TEST1 connect andGate.OUT to soc.GPIO\[1\]; ref connection TEST2 connect soc.GPIO\[2\] to andGate.I… --- ## [Visualization does not support n-ary connections](https://forum.sensmetry.com/t/visualization-does-not-support-n-ary-connections/183)
**Author:** [@Vytautas](https://forum.sensmetry.com/u/Vytautas)\ **Replies:** 3\ **Last updated:** [August 20, 2026, 12:46pm UTC](https://forum.sensmetry.com/t/visualization-does-not-support-n-ary-connections/183 "2026-08-20T12:46:17Z")
Michael Jastram in his blog post reported that SysIDE Modeler visualization does not support n-ary connections: Likewise, the visual display cannot show more than two connections, i.e. connect (A, B, C). These are prob… --- ## [VIZ Fails with User Library Import; Tom Sawyer is Fine](https://forum.sensmetry.com/t/viz-fails-with-user-library-import-tom-sawyer-is-fine/561)
**Author:** [@DavidHetherington](https://forum.sensmetry.com/u/DavidHetherington)\ **Replies:** 4\ **Last updated:** [August 20, 2026, 5:18am UTC](https://forum.sensmetry.com/t/viz-fails-with-user-library-import-tom-sawyer-is-fine/561 "2026-08-20T05:18:53Z")
VIZ fails at rendering when a user library is imported. I have created a very simple test case, a library with one part def, and a model that imports that library, defines one part usage and one view. SysIDE shows “no … --- ## [Minimal JSON round-trip with external/library references produces unresolved-reference warnings and non-identical derived relationships after reconstruction](https://forum.sensmetry.com/t/minimal-json-round-trip-with-external-library-references-produces-unresolved-reference-warnings-and-non-identical-derived-relationships-after-reconstruction/505)
**Author:** [@Robert\_Karban](https://forum.sensmetry.com/u/Robert_Karban)\ **Replies:** 6\ **Last updated:** [August 3, 2026, 10:16am UTC](https://forum.sensmetry.com/t/minimal-json-round-trip-with-external-library-references-produces-unresolved-reference-warnings-and-non-identical-derived-relationships-after-reconstruction/505 "2026-08-03T10:16:59Z")
Summary: When a model is exported to minimal JSON with include\_cross\_ref\_uris=False, then re-imported with syside.json.loads(…), models that reference stdlib/library elements emit unresolved-reference warnings during d… --- ## [OMG default multiplicity not supported for \[..\*\]](https://forum.sensmetry.com/t/omg-default-multiplicity-not-supported-for/544)
**Author:** [@Richard\_Wallace](https://forum.sensmetry.com/u/Richard_Wallace)\ **Replies:** 2\ **Last updated:** [July 31, 2026, 9:49pm UTC](https://forum.sensmetry.com/t/omg-default-multiplicity-not-supported-for/544 "2026-07-31T21:49:19Z")
It appears that the default multiplicity of \[..\*\] being the same as \[0..\*\] is not currently supported. I, myself, never cared for that, as it opens the specification to doubt that it was done correctly. I think explicit… --- ## [Correction needed for ReqIF installation](https://forum.sensmetry.com/t/correction-needed-for-reqif-installation/543)
**Author:** [@Richard\_Wallace](https://forum.sensmetry.com/u/Richard_Wallace)\ **Replies:** 2\ **Last updated:** [July 30, 2026, 1:03pm UTC](https://forum.sensmetry.com/t/correction-needed-for-reqif-installation/543 "2026-07-30T13:03:18Z")
Correction is needed for installing ReqIF. On the web page: https://docs.sensmetry.com/automator/reqif/index.html The instructions are: The command should read: pip install syside\[reqif\] The existing text as sho… --- ## [Double connection in diagram for bind instruction](https://forum.sensmetry.com/t/double-connection-in-diagram-for-bind-instruction/476)
**Author:** [@andre](https://forum.sensmetry.com/u/andre)\ **Replies:** 4\ **Last updated:** [July 29, 2026, 6:23am UTC](https://forum.sensmetry.com/t/double-connection-in-diagram-for-bind-instruction/476 "2026-07-29T06:23:49Z")
Hi I have tried to create a bind between a subsystem the system. package BIND\_Test { port def power\_port; part def SystemDef { port power\_input :power\_port; } part def SubSystemDef { port power\_in :power\_port; } … --- ## [Serialize deserialize bug](https://forum.sensmetry.com/t/serialize-deserialize-bug/512)
**Author:** [@Robert\_Karban](https://forum.sensmetry.com/u/Robert_Karban)\ **Replies:** 2\ **Last updated:** [June 29, 2026, 11:08am UTC](https://forum.sensmetry.com/t/serialize-deserialize-bug/512 "2026-06-29T11:08:08Z")
Hi All, I serialize this model into JSON minimal: package FlashlightStarterModel { package FlashlightSpecificationAndDesign { package Actions { action produceDirectedLight { action provideDCPwr; action connectDCPw… --- ## [Type-error with TensorQuantityValue vs ScalarValues::NumericalValue in constraint expressions](https://forum.sensmetry.com/t/type-error-with-tensorquantityvalue-vs-scalarvalues-numericalvalue-in-constraint-expressions/501)
**Author:** [@Simon\_Huskier](https://forum.sensmetry.com/u/Simon_Huskier)\ **Replies:** 3\ **Last updated:** [June 25, 2026, 2:29pm UTC](https://forum.sensmetry.com/t/type-error-with-tensorquantityvalue-vs-scalarvalues-numericalvalue-in-constraint-expressions/501 "2026-06-25T14:29:42Z")
We encountered a type-error compilation issue in Syside v0.10.1 regarding attribute subsetting (:\>) from the ISQ library within a constraint definition. The exact same model compiles successfully in both the official Sys… --- ## [VSC Extension includes old bundled tools](https://forum.sensmetry.com/t/vsc-extension-includes-old-bundled-tools/508)
**Author:** [@Hormo](https://forum.sensmetry.com/u/Hormo)\ **Replies:** 1\ **Last updated:** [June 16, 2026, 12:51pm UTC](https://forum.sensmetry.com/t/vsc-extension-includes-old-bundled-tools/508 "2026-06-16T12:51:59Z")
I may be doing something wrong but every time I install a new version package in VSC I get the error message: Blockquote: An unexpected version of Syside tools is installed: syside 0.10.1 (xxxxxxxxxxxxxxxxxxxxx) . Expe… --- ## [Redefined attribute values are not used in expression evaluation](https://forum.sensmetry.com/t/redefined-attribute-values-are-not-used-in-expression-evaluation/504)
**Author:** [@Robert\_Karban](https://forum.sensmetry.com/u/Robert_Karban)\ **Replies:** 1\ **Last updated:** [June 15, 2026, 6:08am UTC](https://forum.sensmetry.com/t/redefined-attribute-values-are-not-used-in-expression-evaluation/504 "2026-06-15T06:08:01Z")
Hi, The following model evaluates mass to 60 and not to 120. Evaluation only uses default values but not redefined values. Starkit::Solari::mass: 10.0 Starkit::Nexus::mass: 50.0 Starkit::Molecule::totalMass: 60.0 S… --- ## [Validation error not showing in VSCodium](https://forum.sensmetry.com/t/validation-error-not-showing-in-vscodium/478)
**Author:** [@Ajk](https://forum.sensmetry.com/u/Ajk)\ **Replies:** 2\ **Last updated:** [May 21, 2026, 2:25pm UTC](https://forum.sensmetry.com/t/validation-error-not-showing-in-vscodium/478 "2026-05-21T14:25:48Z")
Hello, I am currently translating a domain-specific language extension from SysML v1 to SysML v2 and I’ve encountered an inconsistency in validation behavior. When using Syside Integrator in VSCodium, I do not see the … --- ## [Perform action referencing bug](https://forum.sensmetry.com/t/perform-action-referencing-bug/468)
**Author:** [@jbussemaker](https://forum.sensmetry.com/u/jbussemaker)\ **Replies:** 5\ **Last updated:** [May 12, 2026, 11:42am UTC](https://forum.sensmetry.com/t/perform-action-referencing-bug/468 "2026-05-12T11:42:42Z")
Hi guys, Consider the following model: package Package { action def TheAction; part def ThePart { perform action theAction : TheAction; } part def TheSystem { action theAction : TheAct… --- ## [Possible issue with user-defined keyword](https://forum.sensmetry.com/t/possible-issue-with-user-defined-keyword/466)
**Author:** [@gwagner](https://forum.sensmetry.com/u/gwagner)\ **Replies:** 1\ **Last updated:** [May 5, 2026, 2:37pm UTC](https://forum.sensmetry.com/t/possible-issue-with-user-defined-keyword/466 "2026-05-05T14:37:50Z")
I have declared the following types/definitions and two user-defined kewords: occurrence def InstantaneousEvent { occurrence redefines endShot = startShot; derived attribute occurrenceTime: Time::TimeInstantValue = … --- ## [Name Resolution of "self"](https://forum.sensmetry.com/t/name-resolution-of-self/459)
**Author:** [@brlarson](https://forum.sensmetry.com/u/brlarson)\ **Replies:** 3\ **Last updated:** [April 29, 2026, 2:10pm UTC](https://forum.sensmetry.com/t/name-resolution-of-self/459 "2026-04-29T14:10:16Z")
With the latest version of Syside (April 29, 2026) references to “self” resolve to Base::Anything::self rather than its local redefinition. This causes error markers for (every?) occurrence of “self”. This is typical: … --- ## [Modeler 0.8.8 silently fails first-run download on macOS arm64 with pre-release channel enabled](https://forum.sensmetry.com/t/modeler-0-8-8-silently-fails-first-run-download-on-macos-arm64-with-pre-release-channel-enabled/455)
**Author:** [@ssd](https://forum.sensmetry.com/u/ssd)\ **Replies:** 3\ **Last updated:** [April 23, 2026, 3:00pm UTC](https://forum.sensmetry.com/t/modeler-0-8-8-silently-fails-first-run-download-on-macos-arm64-with-pre-release-channel-enabled/455 "2026-04-23T15:00:49Z")
Hello, After updating to Modeler 0.8.8 on macOS arm64, opening any .sysml file shows a “Downloading Syside Tools” progress notification that never resolves. No error surfaces to the user, no features are available, and … [Next page](https://forum.sensmetry.com/c/syside/bug-reports/5.md?page=1)