Reference X12 Release 3060 Elements 1312 Test Period or Interval Qualifier 
1312  Test Period or Interval QualifierCode indicating the type of period or interval as related to when a test event occurs Type Identifier (ID) Length Min 2 / Max 2 Codes Code Description   TFFinal Test Measurement or Readpoint (Cumulative) This code marks the end of the experiment under a specific test
   TIIntermediate Test Measurements or Readpoint (Cumulative) There may be a number of intermediate test points during an experiment; this code would likely be combined with DE 350 to indicate which intermediate test point it is
   TOInitial Test Measurement or Readpoint (Cumulative) This is the first test interval that a product or item is subject to
 
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Stedi is a registered trademark of Stedi, Inc. Stedi's EDI Reference
      is provided for marketing purposes and is free of
      charge. All names, logos, and brands of third parties listed on our site
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