Starting tables and a desired size are both defined in your configuration. These two subsetting approaches cannot be used together.

Why this happens

The subsetter supports two different subsetting strategies that are mutually exclusive:

Starting tables approach: Follows relationships from specific tables with optional filters

Desired size approach: Automatically selects data to reach an approximate target size

How to fix

Choose one subsetting strategy and remove the other from your options file:

Option 1: Keep starting tables (remove desired size)

{
  "startingTables": [
    {
      "table": {
        "schema": "dbo", 
        "name": "Users"
      },
      "filterClause": "OrgId = 1"
    }
  ]
  // Remove "desiredSize" property
}

Option 2: Keep desired size (remove starting tables)

{
  "desiredSize": "25%"
  // Remove "startingTables" array
}

When to use each approach

Starting tables: When you need specific data relationships (e.g., all data for Organization ID 1)

Desired size: When you need a general sample of your database at a specific size