===============================
object lacks a required Subtype
===============================

.. contents::
   :depth: 2

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Classification
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.. list-table::
   :align: center

   * - **Validator**
     - **Validator version**
     - **Error message type**
   * - Ghostscript
     - 10.06.0
     - 


.. list-table::
   :align: center

   * - **File format**
     - **Version**
     - **Specification**
     - **Description**
     - **Location**
   * - application/pdf
     - 1.4
     - 
     - 
     - `OPF format-corpus <https://github.com/openpreserve/format-corpus/tree/master/pdf-handbuilt-test-corpus/T02-04-01_005_resources-subtype-missing.pdf>`__
   * - application/pdf
     - 1.3
     - 
     - Govdocs1 set
     - `OPF format-corpus <https://github.com/openpreserve/format-corpus/tree/master/govdocs1-error-pdfs/error_set_2/392154.pdf>`__

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Analyses
--------


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Possible solutions
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.. contents::
   :local:

--------------
Output example
--------------

::


	
	The following errors were encountered at least once while processing this file:
		xref table was repaired
		object lacks a required Subtype
		Incorrect /Length for stream object
	
	   **** This file had errors that were repaired or ignored.
	   **** Please notify the author of the software that produced this
	   **** file that it does not conform to Adobe's published PDF
	   **** specification.
	
	
	GPL Ghostscript 10.06.0 (2025-09-09)
	Copyright (C) 2025 Artifex Software, Inc.  All rights reserved.
	This software is supplied under the GNU AGPLv3 and comes with NO WARRANTY:
	see the file COPYING for details.
	Processing pages 1 through 1.
	Page 1
	Loading font Times-Italic (or substitute) from /opt/ghostscript-10.06/share/ghostscript/Resource/Font/NimbusRoman-Italic
	


------------------
Notes on the error
------------------




------------------------------
Related errors by source files
------------------------------

::

	Ghostscript:	A page ended after a BT had been executed and without a mtching ET
	Ghostscript:	circular reference to indirect object
	Ghostscript:	error executing PDF token
	Ghostscript:	ignoring zlib error: incorrect data check
	Ghostscript:	Incorrect /Length for stream object
	Ghostscript:	invalid operator used in text block
	Ghostscript:	missing white space after number
	Ghostscript:	object lacks a required Subtype
	Ghostscript:	startxref offset invalid
	Ghostscript:	xref table was repaired
	JHOVE:	Invalid object definition
	JHOVE:	No document catalog dictionary

Notice: any operation suggested on this page should be carefully considered before use, as this article is in continuous development.