JSON object as a string.

Specification objects.

Example:

{
  "ph_": {
	"min": 7,
	"innermin": 8,
	"goal": 9,
	"innermax": 10,
	"max": 11
  },
  "viscosity_": {
	"min": 500,
	"innermin": null,
	"goal": null,
	"innermax": null,
	"max": 1300
  }
}

Important: the new specification version replaces the current one entirely. Fields that are left out, or set to null, get an empty specification in the new version: their current specification is not carried over. Include every field whose specification you want to keep.

Tip: Call the getSpecificationVersion endpoint to see the exact Specification data structure for this setId.

The index field value. (Only applies to sets which have an index field.)

Store a new specification version for this index value.

Leave out to create a generic specification which applies to all index values.

The start date and time of the new specification version, formatted as yyyy-mm-dd hh:mm:ss (with a space between date and time, not a T), or as a Unix timestamp.

Leave out to use the current date and time.

The reason for changing the spec

This is used for documentation only.