The following table lists validation errors that may appear and offers possible solutions:
| Validation Error | Solution |
|---|---|
| No value column (no tab character). | Check whether the information in the file you are importing is tab-delimited. |
| Unable to parse investigation file. Is this file a valid ISA TAB investigation? | Check whether you are importing an investigation file, rather than a study or assay file. |
| Metadata files not found | Check whether your metadata files are in the same folder as your investigation file. That is where the system tries to find them. |
| Investigation File Missing Required Headers |
|
| Investigation File missing fields required by the DCC | Click each link in the Validation panel. For each required field, add an element, as described in Adding an Element or Element Group. |
| Study processes must be defined and have steps. | For each study, add one or more processes with steps. For instructions, refer to Adding a Process and Adding a Process Step. |
| Study processes must begin with a Source. | At the start of each process, add a source step. For instructions, refer to Adding a Process Step. |
| Study processes must end with a Sample. | At the end of each process, add a sample step. For instructions, refer to Adding a Process Step. |
| Assay processes must be defined and have steps. | For each assay, add one or more processes with steps. For instructions, refer to Adding a Process and Adding a Process Step. |
| Assay processes must begin with a Sample. | At the start of each process, add a sample step. For instructions, refer to Adding a Process Step. |
| Sample name is required on Sample nodes. | For each sample process step, specify a sample name. For instructions, refer to Editing One or More Process Steps. |
