Locking system for sliding-pivoting doors/panels (18 and 19) systems which are independent between them, wherein there is a locking and unlocking mechanism based on a sliding operation of the first panel or door and a guiding mechanism of the panels (18 and 19) placed in the sliding top track, the guiding mechanism comprising: • a cap placed at the exit hole of the sliding top track with a rectangular shape whose base is fixed by means of screws to the interior of a top aluminium profile of the panels (18, 19) and it is part only of the door, • an array of slots placed on the bottom of the top track, the slots outstanding from the bottom of the top track and having the slots walls a trapezoidal shape, being the inner walls of the slots not parallel, • a guiding inverted "T" shape part which is fixed in the panels (18 and 19), being the inverted "T" shape part an independent element even of the top pivot part and being the inverted "T" shape part the only support surface of the doors/panels (18,19) when they pivot and having the base of the T a bigger section and thickness than the opposite end, being inserted the base of the inverted "T" shape into the top aluminium profile of each panel (18 and 19) and is positioned just side by side to the top pivot element, and wherein the end part of the vertical part of the "T", that outstands from the top profile, has a trapezoidal shape with two sides which are complementary to the inner walls of the slots in the array of slots, working the inverted "T" together with the array of slots, and being the geometry of the inverted "T" shape part and the array of slots complementary between them, characterized in that the locking and unlocking mechanism comprises: • "U" shape profile fixed to the wall, • "U" shape moving profile fitted to the "U" shape profile fixed to the wall becoming a unique body, • a set of mechanisms of the locking system made of a pair of elbow shape parts, a handle, two blocks and two plates, wherein interior part of the handle is connected to two flat plates, one at the top and the other at the bottom, and wherein the flat plates are placed along and onto the base of the "U" shape profile, up to the top and bottom of the "U" shape profile where they are connected to two elbows with two different length arms in 90° angle each, being the elbows produced in one piece and having inside a moving connector that outstands from the longest arm and is connected to the flat plate by means of a protrusion and a hole in the flat plate, and another connector that outstands the shortest arm for the elbow and connects to a fixing block with a nearly cubic shape by means of another protuberance and wherein the fixing block is fixed to the base of the "U" shape moving profile, being the width of the base of the profile slightly bigger than the base of the moving profile and fitting the "U" moving profile into the profile. • a cap placed at the exit hole of the sliding top track with a rectangular shape whose base is fixed by means of screws to the interior of a top aluminium profile of the panels (18, 19) and it is part only of the door, • an array of slots placed on the bottom of the top track, the slots outstanding from the bottom of the top track and having the slots walls a trapezoidal shape, being the inner walls of the slots not parallel, • a guiding inverted "T" shape part which is fixed in the panels (18 and 19), being the inverted "T" shape part an independent element even of the top pivot part and being the inverted "T" shape part the only support surface of the doors/panels (18,19) when they pivot and having the base of the T a bigger section and thickness than the opposite end, being inserted the base of the inverted "T" shape into the top aluminium profile of each panel (18 and 19) and is positioned just side by side to the top pivot element, and wherein the end part of the vertical part of the "T", that outstands from the top profile, has a trapezoidal shape with two sides which are complementary to the inner walls of the slots in the array of slots, • "U" shape profile fixed to the wall, • "U" shape moving profile fitted to the "U" shape profile fixed to the wall becoming a unique body, • a set of mechanisms of the locking system made of a pair of elbow shape parts, a handle, two blocks and two plates, wherein interior part of the handle is connected to two flat plates, one at the top and the other at the bottom, and wherein the flat plates are placed along and onto the base of the "U" shape profile, up to the top and bottom of the "U" shape profile where they are connected to two elbows with two different length arms in 90° angle each, being the elbows produced in one piece and having inside a moving connector that outstands from the longest arm and is connected to the flat plate by means of a protrusion and a hole in the flat plate, and another connector that outstands the shortest arm for the elbow and connects to a fixing block with a nearly cubic shape by means of another protuberance and wherein the fixing block is fixed to the base of the "U" shape moving profile, being the width of the base of the profile slightly bigger than the base of the moving profile and fitting the "U" moving profile into the profile.