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Record Summary Metadata
TIMESTAMP
2026-09-28 15:11:34
APPLICATION
DSTAPI v4.1.9.0
ENVIRONMENT MODE
Server
PAGE / METHOD
SalesDetailsController / DownloadPdf
MESSAGE
You should not assign multiple child elements to a single-child container. This may happen when a container variable is used outside of its scope/closure OR the container is used in multiple fluent API chains OR the container is used incorrectly in a loop. This exception is thrown to help you detect that some part of the code is overriding fragments of the document layout with a new content - essentially destroying existing content.