An in-line method of rejecting composition-filled pouches having a leakage defect from a pouch converting line so to avoid leakage onto neighbouring pouches, wherein the pouch converting line comprises a platen having a surface, the platen comprising a plurality of pouch cavities in the surface of the platen, wherein each of the pouch cavities is: a) surrounded by a plurality of platen edges; b) arranged in lanes and rows such that the location of each cavity is defined by a single lane, L disposed between Lane L-1 and Lane L+1, and a single row, R disposed between row R-1 and Row R+1; characterised in that each of the pouch cavities in combination with the plurality of platen edges defines an area comprising at least four zones selected from the group of: Top Zone adjacent to Row R-1; Bottom Zone adjacent to R+1, a Left Zone adjacent to L-1; and a Right Zone adjacent to L+1; the method comprising the step of inspecting a first composition-filled pouch located in the cavity at lane, L, row, R for a defect in at least one of the four zones, such that if a defect is detected in: i. the Top Zone, the first composition-filled pouch is rejected and a second composition-filled pouch if present in a cavity at Lane, L, row, R-1 is rejected; ii. the Bottom Zone, the first composition-filled pouch is rejected and a second composition-filled pouch if present in a cavity at Lane, L, row R+1 is rejected; iii. the Left Zone, the first composition-filled pouch is rejected and a second composition-filled pouch if present in a cavity at Lane, L-1, row, R is rejected; iv. the Right Zone, the first composition-filled pouch is rejected and a second composition-filled pouch if present in a cavity at Lane, L+1, row, R is rejected. a) surrounded by a plurality of platen edges; b) arranged in lanes and rows such that the location of each cavity is defined by a single lane, L disposed between Lane L-1 and Lane L+1, and a single row, R disposed between row R-1 and Row R+1; characterised in that each of the pouch cavities in combination with the plurality of platen edges defines an area comprising at least four zones selected from the group of: Top Zone adjacent to Row R-1; Bottom Zone adjacent to R+1, a Left Zone adjacent to L-1; and a Right Zone adjacent to L+1; the method comprising the step of inspecting a first composition-filled pouch located in the cavity at lane, L, row, R for a defect in at least one of the four zones, such that if a defect is detected in: i. the Top Zone, the first composition-filled pouch is rejected and a second composition-filled pouch if present in a cavity at Lane, L, row, R-1 is rejected; ii. the Bottom Zone, the first composition-filled pouch is rejected and a second composition-filled pouch if present in a cavity at Lane, L, row R+1 is rejected; iii. the Left Zone, the first composition-filled pouch is rejected and a second composition-filled pouch if present in a cavity at Lane, L-1, row, R is rejected; iv. the Right Zone, the first composition-filled pouch is rejected and a second composition-filled pouch if present in a cavity at Lane, L+1, row, R is rejected. i. the Top Zone, the first composition-filled pouch is rejected and a second composition-filled pouch if present in a cavity at Lane, L, row, R-1 is rejected; ii. the Bottom Zone, the first composition-filled pouch is rejected and a second composition-filled pouch if present in a cavity at Lane, L, row R+1 is rejected; iii. the Left Zone, the first composition-filled pouch is rejected and a second composition-filled pouch if present in a cavity at Lane, L-1, row, R is rejected; iv. the Right Zone, the first composition-filled pouch is rejected and a second composition-filled pouch if present in a cavity at Lane, L+1, row, R is rejected.