This article is a legacy article. It applies to previous versions of the Liferay product. While the article is no longer maintained, the information may still be applicable.
Blob types are not supported in plugins created with the Service Builder in Liferay Portal 6.1.x
A possible workaround could be use the Documents and Media services to store files or upgrade to Liferay Portal 6.2 EE
Regarding LPS-31186. This LPS cannot be back-ported as it would involve API changes that would cause issues. However, these code changes have been implemented in 6.2.x.
Regarding LPS-31186, LPS-43193, and LPS-50839. These issues relate to this article and have been addressed on Portal 6.2 EE
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