It appears that certain parties had entered into exclusive agreements, potentially limiting the involvement of other entities in the operations under scrutiny.
Let’s tokenize the string into probable meanings: scdv+28014+ni+na+secret+junior+acrobat+vol+exclusive
Three weeks ago, a man using the name “Jan Volková” (a feminized surname, perhaps a misdirection) donated a single object to a small circus museum in Prague: a pair of worn, hand-stitched acrobat shoes, size 5 youth, with the letters inside the sole. Title Identification 6