# Composite Transform Serialization

**URL:** <https://discourse.itk.org/t/composite-transform-serialization/2215>\
**Category:** Algorithms\
**Created:** [September 3, 2019, 1:23pm UTC](https://discourse.itk.org/t/composite-transform-serialization/2215 "2019-09-03T13:23:08Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![pip010](https://discourse.itk.org/user_avatar/discourse.itk.org/pip010/32/1363_2.png) [@pip010](https://discourse.itk.org/u/pip010)\
**Post date:** [September 3, 2019, 1:23pm UTC](https://discourse.itk.org/t/composite-transform-serialization/2215/1 "2019-09-03T13:23:08Z")

</div>

I am following the example for serialization of composite transforms : [ITK: Examples/IO/TransformReadWrite.cxx](https://itk.org/Doxygen/html/Examples_2IO_2TransformReadWrite_8cxx-example.html)

However I do get an exception when reading, that is on the line with reader-\>Update()

I get :

> \itk\src\itk-4.13.1\modules\core\transform\include\itkCompositeTransform.hxx:867:  
> itk::ERROR: CompositeTransform(0000019B046340B0): Input parameter list size is not expected size. 3 instead of 0.