The following column lists the observation IDs of mosaic-mode sub-pointings originating from parent mosaic-mode ODFs that are known to have been incorrectly split and where all instruments in all sub-pointings are potentially affected. Eight parent observations are involved (63 sub-pointings). 0158760132 0158760133 0158760134 0158760135 0158760136 0158760137 0158760138 0158760139 0158760140 0161560131 0161560132 0161560133 0161560134 0161560135 0161560136 0161560137 0161560138 0161560139 0161560140 0161560141 0161560142 0200080231 0200080232 0200080233 0200080234 0200080731 0200080732 0200080733 0200080734 0600460231 0600460232 0600460233 0600460234 0600460235 0600460236 0600460237 0600460831 0600460832 0600460833 0600460834 0600460835 0600460836 0600460837 0677650131 0677650132 0677650133 0677650134 0677650135 0677650136 0677650137 0677650138 0677650139 0677650140 0677650141 0677660231 0677660232 0677660233 0677660234 0677660235 0677660236 0677660237 0677660238 0677660239 The following column lists the observation IDs of mosaic-mode sub-pointings originating from mosaic-mode ODFs that show at least some problems with the ODF splitting process but where not all the data are impacted. Ten parent observations (26 sub-pointings, of which 19 are included in the 3XMM-DR4 catalogue) are involved. In all cases except 0300960233 and 0604873442, where only MOS2 is affected, MOS1 and MOS2 data are affected. Those sub-pointings marked with an asterisk are not included in the 3XMM-DR4 catalogue. 0103461136 0162362734 0300960233 * 0604873442 * 0677600134 0677600135 0677600136 0677600137 0677600138 0677600139 0677630136 * 0677630137 * 0677630138 * 0677630139 0677720140 0677740135 0677740136 0677740137 0677740138 0677740139 0677740140 0677750138 * 0677750139 * 0677750140 0677981232 0677981233