UploadSiteHostedPictures: Why am I recieving the error "MyPictureUpload is Full" error code?

Summary

UploadSiteHostedPictures is throwing the error "MyPictureUpload is Full." when attempting to upload an image
Detailed Description

UploadSiteHostedPictures is throwing the error "MyPictureUpload is Full." when attempting to upload an image

The following is a detailed error message container:

<Errors>
<ShortMessage>MyPictureUpload is Full.</ShortMessage>
<LongMessage>MyPicture Upload exceed the number of allowed pictures.</LongMessage>
<ErrorCode>21915253</ErrorCode>
<SeverityCode>Error</SeverityCode>
<ErrorClassification>RequestError</ErrorClassification>
</Errors>

Check for the following field in the request:

<PictureUploadPolicy>Add</PictureUploadPolicy>

Adding this field enables the My Pictures Uploads feature on the site Sell Your Item flow. This has a limitation of 25 images allowed to upload. If the seller does not intend to make use of the site listing flow, or they do not intend to use the My Pictures Uploads feature, do not include this tag.

Additional Resources

• More information on the Call Reference page: http://developer.ebay.com/DevZone/XML/docs/Reference/eBay/UploadSiteHostedPictures.html#Request.PictureUploadPolicy

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