Wrong error message on validation of stim file

[Remi-Gau]

This relates to this dataset: https://openneuro.org/datasets/ds000238/versions/00002

This dataset contains "stim" files:

/sub-01/beh/sub-01_task-test_stim.tsv.gz

That have several problems:

• they should actually be beh.tsv files as they are recording suibject's response and not stimuli related data
• even if they were stim files
  • they contain a header where as stim.tsv.gz should not
  • they do not have the required stim.json side car

Also I think that the error reported by the openneuro validator is not quite what I would expect.

Error pasted below:

Location:

/sub-01/beh/sub-01_task-test_stim.tsv.gz

Reason:

You should define 'ArterialSpinLabelingType' for this file. 'ArterialSpinLabelingType' can be CASL, PCASL, PASL.

[effigies]

It is a weird report. If you download it though, you get:

❯ bids-validator --verbose --remoteFiles .
bids-validator@1.14.5
(node:691621) Warning: Closing directory handle on garbage collection
(Use `node --trace-warnings ...` to show where the warning was created)
	1: [ERR] Continous recording data files are required to have an associated JSON metadata file. (code: 170 - CONTINOUS_RECORDING_MISSING_JSON)
		./sub-01/beh/sub-01_task-test_stim.tsv.gz
			Continous recording data files are required to have an associated JSON metadata file.

	Please visit https://neurostars.org/search?q=CONTINOUS_RECORDING_MISSING_JSON for existing conversations about this issue.

	1: [WARN] Tabular file contains custom columns not described in a data dictionary (code: 82 - CUSTOM_COLUMN_WITHOUT_DESCRIPTION)
		./participants.tsv
			Tabular file contains custom columns not described in a data dictionary
			Evidence: Columns: age, sex, handedness, design_order1, design_order2, design_order3, design_order4, design_order5 not defined, please define in: /participants.json
		./sub-01/func/sub-01_task-med8_run-1_events.tsv
			Tabular file contains custom columns not described in a data dictionary
			Evidence: Columns: stimulus, Var4 not defined, please define in: /events.json, /task-med8_events.json,/run-1_events.json,/task-med8_run-1_events.json,/sub-01/sub-01_events.json,/sub-01/sub-01_task-med8_events.json,/sub-01/sub-01_run-1_events.json,/sub-01/sub-01_task-med8_run-1_events.json,/sub-01/func/sub-01_events.json,/sub-01/func/sub-01_task-med8_events.json,/sub-01/func/sub-01_run-1_events.json,/sub-01/func/sub-01_task-med8_run-1_events.json

	Please visit https://neurostars.org/search?q=CUSTOM_COLUMN_WITHOUT_DESCRIPTION for existing conversations about this issue.

        Summary:                  Available Tasks:        Available Modalities: 
        14 Files, 187.04MB        Med8                    MRI                   
        1 - Subject               Slow12                                        
        1 - Session               Quick4n                                       
                                  Slow10                                        
                                  Quick6                                        


	If you have any questions, please post on https://neurostars.org/tags/bids.

So this is likely a problem where OpenNeuro stored a buggy validation report long-term.