Error, Plate # 11300 is NOT valid because Node # 4439 is NOT valid.

Question

Hello, 
 I am unsure why I am getting this error when my last plate element is clearly #11299. I don't understand why there would be plate nos. after 11299. See the following snapshot of the code error. 
 Please note: I want to keep this code format. I don't want STAAD to reconfigure everything. 
 
 Any help is greatly appreciated. Thanks. 
 RR BLDG - rev06.STD

Sye · Answer

Please re-check your Joint Coordinates and Element Incidences. 
 For example for element incidences you have specified ELEMENT INCIDENCES SHELL 7000 1 2 89 88 TO 7085 1 1 REPEAT ALL 50 86 87 
 The REPEAT ALL should be REPEAT ALL 50 86 86 
 as both element numbers and joint numbers are going to be incremented by 1. Please check joint coordinates as well. In addition please be aware that once you save the file using the GUI, the REPEAT commands will get replaced by actual coordinates, node numbers, plate numbers etc. So you may want to keep a copy of those commands for your future reference.