Can't run workflow when a node input is connected to an output that is a superset of the possible selection #11125
Description
Custom Node Testing
- I have tried disabling custom nodes and the issue persists (see how to disable custom nodes if you need help)
Expected Behavior
When linking KSampler Config (rgthree)'s scheduler to KSampler (Efficient)'s scheduler, then running the workflow, the workflow runs.
Actual Behavior
An error message apprears with:
Prompt execution failed
Prompt outputs failed validation: Return type mismatch between linked nodes: scheduler, received_type(['simple', 'sgm_uniform', 'karras', 'exponential', 'ddim_uniform', 'beta', 'normal', 'linear_quadratic', 'kl_optimal']) mismatch input_type(['simple', 'sgm_uniform', 'karras', 'exponential', 'ddim_uniform', 'beta', 'normal', 'linear_quadratic', 'kl_optimal', 'AYS SD1', 'AYS SDXL', 'AYS SVD', 'GITS'])
KSampler (Efficient):
- Return type mismatch between linked nodes: scheduler, received_type(['simple', 'sgm_uniform', 'karras', 'exponential', 'ddim_uniform', 'beta', 'normal', 'linear_quadratic', 'kl_optimal']) mismatch input_type(['simple', 'sgm_uniform', 'karras', 'exponential', 'ddim_uniform', 'beta', 'normal', 'linear_quadratic', 'kl_optimal', 'AYS SD1', 'AYS SDXL', 'AYS SVD', 'GITS'])
Steps to Reproduce
The versions impacted are rgtree: [1.0.2506230015] and efficiency-nodes: 1.0.7
With rgthree and impact-pack installed, and from the default workflow:
- add a
KSampler Config (rgthree)node; - add a
KSampler (Efficient)node; - move the connections from the default KSampler to the one we just added and connect it to the image output;
- connect the config node's scheduler to the new KSampler;
- press run.
Debug Logs
2025-07-04T09:51:09.621990 - >> To allow unsafe loading for specific trusted legacy models (e.g., older .pt),
2025-07-04T09:51:09.622006 - >> add their base filenames (one per line) to this file.
2025-07-04T09:51:09.622055 - [Impact Pack/Subpack] Created empty whitelist file: /home/<user>/local-installation/ComfyUI/user/default/ComfyUI-Impact-Subpack/model-whitelist.txt
2025-07-04T09:51:09.931771 - [Impact Subpack] ultralytics_bbox: /home/<user>/local-installation/ComfyUI/models/ultralytics/bbox
2025-07-04T09:51:09.931841 - [Impact Subpack] ultralytics_segm: /home/<user>/local-installation/ComfyUI/models/ultralytics/segm
2025-07-04T09:51:10.360503 - [34mWAS Node Suite: [0mOpenCV Python FFMPEG support is enabled[0m2025-07-04T09:51:10.360530 -
2025-07-04T09:51:10.360557 - [34mWAS Node Suite [93mWarning: [0m`ffmpeg_bin_path` is not set in `/home/<user>/local-installation/ComfyUI/custom_nodes/was-node-suite-comfyui/was_suite_config.json` config file. Will attempt to use system ffmpeg binaries if available.[0m2025-07-04T09:51:10.360569 -
2025-07-04T09:51:10.530311 - [34mWAS Node Suite: [0mFinished.[0m [32mLoaded[0m [0m220[0m [32mnodes successfully.[0m2025-07-04T09:51:10.530335 -
2025-07-04T09:51:10.530357 -
[3m[93m"Art is the freedom to create, explore, and inspire."[0m[3m - Unknown[0m
2025-07-04T09:51:10.530369 -
2025-07-04T09:51:10.533736 - ### Loading: ComfyUI-Impact-Pack (V8.17.1)2025-07-04T09:51:10.533754 -
2025-07-04T09:51:10.604315 - [Impact Pack] Wildcards loading done.2025-07-04T09:51:10.604340 -
2025-07-04T09:51:10.733998 -
2025-07-04T09:51:10.734037 - [92m[rgthree-comfy] Loaded 47 extraordinary nodes. 🎉[0m2025-07-04T09:51:10.734059 -
2025-07-04T09:51:10.734074 -
2025-07-04T09:51:10.736661 - ### Loading: ComfyUI-Manager (V3.33.6)
2025-07-04T09:51:10.736903 - [ComfyUI-Manager] network_mode: public
2025-07-04T09:51:10.759154 - ### ComfyUI Version: v0.3.43-22-g27870ec3 | Released on '2025-07-04'
2025-07-04T09:51:10.763148 -
Import times for custom nodes:
2025-07-04T09:51:10.763195 - 0.0 seconds: /home/<user>/local-installation/ComfyUI/custom_nodes/websocket_image_save.py
2025-07-04T09:51:10.763221 - 0.0 seconds: /home/<user>/local-installation/ComfyUI/custom_nodes/sd-dynamic-thresholding
2025-07-04T09:51:10.763243 - 0.0 seconds: /home/<user>/local-installation/ComfyUI/custom_nodes/comfyui-manager
2025-07-04T09:51:10.763261 - 0.0 seconds: /home/<user>/local-installation/ComfyUI/custom_nodes/efficiency-nodes-comfyui
2025-07-04T09:51:10.763279 - 0.1 seconds: /home/<user>/local-installation/ComfyUI/custom_nodes/comfyui-impact-pack
2025-07-04T09:51:10.763296 - 0.1 seconds: /home/<user>/local-installation/ComfyUI/custom_nodes/rgthree-comfy
2025-07-04T09:51:10.763313 - 0.3 seconds: /home/<user>/local-installation/ComfyUI/custom_nodes/ComfyUI-Impact-Subpack
2025-07-04T09:51:10.763330 - 0.6 seconds: /home/<user>/local-installation/ComfyUI/custom_nodes/was-node-suite-comfyui
2025-07-04T09:51:10.763347 -
2025-07-04T09:51:10.829853 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/model-list.json
2025-07-04T09:51:10.833410 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/alter-list.json
2025-07-04T09:51:11.009658 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/github-stats.json
2025-07-04T09:51:11.052012 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/extension-node-map.json
2025-07-04T09:51:11.106956 - [ComfyUI-Manager] default cache updated: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/custom-node-list.json
2025-07-04T09:51:11.112472 - Context impl SQLiteImpl.
2025-07-04T09:51:11.112524 - Will assume non-transactional DDL.
2025-07-04T09:51:11.112989 - No target revision found.
2025-07-04T09:51:11.119765 - Starting server
2025-07-04T09:51:11.119895 - To see the GUI go to: http://127.0.0.1:8188
2025-07-04T09:51:13.549995 - FETCH ComfyRegistry Data: 5/902025-07-04T09:51:13.550020 -
2025-07-04T09:51:16.541788 - FETCH ComfyRegistry Data: 10/902025-07-04T09:51:16.541857 -
2025-07-04T09:51:19.539908 - FETCH ComfyRegistry Data: 15/902025-07-04T09:51:19.539930 -
2025-07-04T09:51:22.539306 - FETCH ComfyRegistry Data: 20/902025-07-04T09:51:22.539330 -
2025-07-04T09:51:25.497008 - FETCH ComfyRegistry Data: 25/902025-07-04T09:51:25.497033 -
2025-07-04T09:51:28.524494 - FETCH ComfyRegistry Data: 30/902025-07-04T09:51:28.524522 -
2025-07-04T09:51:31.521533 - FETCH ComfyRegistry Data: 35/902025-07-04T09:51:31.521560 -
2025-07-04T09:51:34.484684 - FETCH ComfyRegistry Data: 40/902025-07-04T09:51:34.484709 -
2025-07-04T09:51:37.852655 - FETCH ComfyRegistry Data: 45/902025-07-04T09:51:37.852680 -
2025-07-04T09:51:40.802803 - FETCH ComfyRegistry Data: 50/902025-07-04T09:51:40.802830 -
2025-07-04T09:51:43.781125 - FETCH ComfyRegistry Data: 55/902025-07-04T09:51:43.781153 -
2025-07-04T09:51:47.384198 - FETCH ComfyRegistry Data: 60/902025-07-04T09:51:47.384224 -
2025-07-04T09:51:50.526101 - FETCH ComfyRegistry Data: 65/902025-07-04T09:51:50.526127 -
2025-07-04T09:51:53.622166 - FETCH ComfyRegistry Data: 70/902025-07-04T09:51:53.622192 -
2025-07-04T09:51:56.692996 - FETCH ComfyRegistry Data: 75/902025-07-04T09:51:56.693022 -
2025-07-04T09:51:59.814080 - FETCH ComfyRegistry Data: 80/902025-07-04T09:51:59.814106 -
2025-07-04T09:52:02.840097 - FETCH ComfyRegistry Data: 85/902025-07-04T09:52:02.840123 -
2025-07-04T09:52:05.892848 - FETCH ComfyRegistry Data: 90/902025-07-04T09:52:05.892874 -
2025-07-04T09:52:06.392987 - FETCH ComfyRegistry Data [DONE]2025-07-04T09:52:06.393019 -
2025-07-04T09:52:06.461510 - [ComfyUI-Manager] default cache updated: https://api.comfy.org/nodes
2025-07-04T09:52:06.468028 - FETCH DATA from: https://raw.githubusercontent.com/ltdrdata/ComfyUI-Manager/main/custom-node-list.json2025-07-04T09:52:06.468044 - 2025-07-04T09:52:06.518113 - [DONE]2025-07-04T09:52:06.518140 -
2025-07-04T09:52:06.546403 - [ComfyUI-Manager] All startup tasks have been completed.
2025-07-04T10:29:44.337908 - got prompt
2025-07-04T10:29:44.338350 - Failed to validate prompt for output 11:
2025-07-04T10:29:44.338387 - * (prompt):
2025-07-04T10:29:44.338411 - - Return type mismatch between linked nodes: scheduler, received_type(['simple', 'sgm_uniform', 'karras', 'exponential', 'ddim_uniform', 'beta', 'normal', 'linear_quadratic', 'kl_optimal']) mismatch input_type(['simple', 'sgm_uniform', 'karras', 'exponential', 'ddim_uniform', 'beta', 'normal', 'linear_quadratic', 'kl_optimal', 'AYS SD1', 'AYS SDXL', 'AYS SVD', 'GITS'])
2025-07-04T10:29:44.338435 - * KSampler (Efficient) 11:
2025-07-04T10:29:44.338454 - - Return type mismatch between linked nodes: scheduler, received_type(['simple', 'sgm_uniform', 'karras', 'exponential', 'ddim_uniform', 'beta', 'normal', 'linear_quadratic', 'kl_optimal']) mismatch input_type(['simple', 'sgm_uniform', 'karras', 'exponential', 'ddim_uniform', 'beta', 'normal', 'linear_quadratic', 'kl_optimal', 'AYS SD1', 'AYS SDXL', 'AYS SVD', 'GITS'])
2025-07-04T10:29:44.338473 - Output will be ignored
2025-07-04T10:29:44.338501 - Failed to validate prompt for output 9:
2025-07-04T10:29:44.338532 - Output will be ignored
2025-07-04T10:29:44.338575 - invalid prompt: {'type': 'prompt_outputs_failed_validation', 'message': 'Prompt outputs failed validation', 'details': "Return type mismatch between linked nodes: scheduler, received_type(['simple', 'sgm_uniform', 'karras', 'exponential', 'ddim_uniform', 'beta', 'normal', 'linear_quadratic', 'kl_optimal']) mismatch input_type(['simple', 'sgm_uniform', 'karras', 'exponential', 'ddim_uniform', 'beta', 'normal', 'linear_quadratic', 'kl_optimal', 'AYS SD1', 'AYS SDXL', 'AYS SVD', 'GITS'])", 'extra_info': {}}Other
Reposted from Comfy-Org/ComfyUI_frontend#4347 at request of contributor