Error - 'Syntax error or access violation' in update step of task

This may be due to an issue with accessing the file data in the update step - effectively the previous step has not released the file when the update step runs.
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If you have an issue such as this, Codeless Platforms (the creators of the Access Task Centre application) recommends creating the step that creates the file itself as it's own task, and then instead of creating the file in the main task, use a Call Task step to run a task to create the file. When using a call task step in this manner, the update step will not run until the file has been released by the secondary task.