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ble_app_uart_c_multilink example throws Error 4

Hi,

based on my previous post/question here and after I managed to cconnect  5 specific address devices/peripherals from my central (DK) based on filtering (solution in the link)
I now try to receive continuous raw data from the connected devices/peripherals as depicted in the following figure

Initially I tried to send continuous raw data from one device to the central before adding more devices. 

Initially I send a command to the peripheral so that to start transmitting data back to the central but after a while the central throws the following error  220%22%2F%3E%3CmxCell%20id%3D%222%22%20style%3D%22edgeStyle%3DorthogonalEdgeStyle%3Brounded%3D0%3BorthogonalLoop%3D1%3BjettySize%3Dauto%3Bhtml%3D1%3BexitX%3D1%3BexitY%3D0.5%3BexitDx%3D0%3BexitDy%3D0%3BexitPerimeter%3D0%3BentryX%3D0%3BentryY%3D0.5%3BentryDx%3D0%3BentryDy%3D0%3BstartArrow%3Dclassic%3BstartFill%3D1%3B%22%20edge%3D%221%22%20source%3D%223%22%20target%3D%224%22%20parent%3D%221%22%3E%3CmxGeometry%20relative%3D%221%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%223%22%20value%3D%22%22%20style%3D%22fontColor%3D%230066CC%3BverticalAlign%3Dtop%3BverticalLabelPosition%3Dbottom%3BlabelPosition%3Dcenter%3Balign%3Dcenter%3Bhtml%3D1%3BoutlineConnect%3D0%3BfillColor%3D%23CCCCCC%3BstrokeColor%3D%236881B3%3BgradientColor%3Dnone%3BgradientDirection%3Dnorth%3BstrokeWidth%3D2%3Bshape%3Dmxgraph.networks.pc%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%2260%22%20y%3D%22180%22%20width%3D%22100%22%20height%3D%2270%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%224%22%20value%3D%22nRF52840%26lt%3Bbr%26gt%3BDK%26lt%3Bbr%26gt%3BCentral%22%20style%3D%22whiteSpace%3Dwrap%3Bhtml%3D1%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22275%22%20y%3D%22195%22%20width%3D%2270%22%20height%3D%2240%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%225%22%20value%3D%22%22%20style%3D%22verticalLabelPosition%3Dbottom%3Bshadow%3D0%3Bdashed%3D0%3Balign%3Dcenter%3Bhtml%3D1%3BverticalAlign%3Dtop%3Bshape%3Dmxgraph.electrical.radio.aerial_-_antenna_2%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22330%22%20y%3D%22175%22%20width%3D%2220%22%20height%3D%2220%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%226%22%20value%3D%22Peripheral%201%22%20style%3D%22rounded%3D1%3BwhiteSpace%3Dwrap%3Bhtml%3D1%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22414%22%20y%3D%22110%22%20width%3D%2270%22%20height%3D%2230%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%227%22%20value%3D%22Peripheral%202%22%20style%3D%22rounded%3D1%3BwhiteSpace%3Dwrap%3Bhtml%3D1%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22474%22%20y%3D%22150%22%20width%3D%2270%22%20height%3D%2230%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%228%22%20value%3D%22Peripheral%203%22%20style%3D%22rounded%3D1%3BwhiteSpace%3Dwrap%3Bhtml%3D1%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22504%22%20y%3D%22200%22%20width%3D%2270%22%20height%3D%2230%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%229%22%20value%3D%22Peripheral%204%22%20style%3D%22rounded%3D1%3BwhiteSpace%3Dwrap%3Bhtml%3D1%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22474%22%20y%3D%22250%22%20width%3D%2270%22%20height%3D%2230%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%2210%22%20value%3D%22Peripheral%205%22%20style%3D%22rounded%3D1%3BwhiteSpace%3Dwrap%3Bhtml%3D1%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22428%22%20y%3D%22290%22%20width%3D%2276%22%20height%3D%2230%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%2211%22%20value%3D%22JLink%20CDC%20Uart%22%20style%3D%22text%3Bhtml%3D1%3Balign%3Dcenter%3BverticalAlign%3Dmiddle%3Bresizable%3D0%3Bpoints%3D%5B%5D%3Bautosize%3D1%3BstrokeColor%3Dnone%3BfillColor%3Dnone%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22170%22%20y%3D%22195%22%20width%3D%22100%22%20height%3D%2220%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3CmxCell%20id%3D%2212%22%20value%3D%22%22%20style%3D%22html%3D1%3Bshadow%3D0%3Bdashed%3D0%3Balign%3Dcenter%3BverticalAlign%3Dmiddle%3Bshape%3Dmxgraph.arrows2.arrow%3Bdy%3D0.63%3Bdx%3D13.33%3BflipH%3D1%3Bnotch%3D0%3B%22%20vertex%3D%221%22%20parent%3D%221%22%3E%3CmxGeometry%20x%3D%22388%22%20y%3D%22200%22%20width%3D%2240%22%20height%3D%2230%22%20as%3D%22geometry%22%2F%3E%3C%2FmxCell%3E%3C%2Froot%3E%3C%2FmxGraphModel%3E

<error> app: app_uart_put failed for index 0x000D.
<error> app: ERROR 4 [NRF_ERROR_NO_MEM]

This happens a little after a few raw data have been transmitted back to the central and it happens every time I re-Initiate the procedure

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