This type of error occurs when the origin server is unable to accept the pushed HDS fragment due to its current state. For example, such errors occur when the request attempts to push content with a reverse timestamp to the origin server.
To eliminate chances of the occurrence of this type of error, do the following:
Verify that the encoder maintains the stream time on restart if the content is generated at the encoder.
Sometimes when you reset the Packager state in preparation for another event, but the corresponding origin module may still contain the fragments and manifest from the previous session. In this case, the reset origin state too.