The pin numbering on the ccxp270 module does not align with the suggested pin numbering of the Samtec connector. In your datasheet (CCXP270_Hardware_Reference_Manual) on page 92 (Mechanical Dimensions), you have got a design of the bottom view of the ccxp270. Have a look where is Pin 1 in your design and where is Pin 1 in the datasheet from Samtec. (http://www.samtec.com/ftppub/cpdf/LSH-XXX-01-X-D-A-XX-MKT.PDF) or (http://www.samtec.com/ftppub/cpdf/LTH-XXX-XX-X-D-A-XX-MKT.PDF).
Which one is the correct?
The CCXP270_Hardware_Reference_Manual is the "correct" one. The product sheets from Samtech (in this particular example) are suggested pin outs. They don''''t actually mean anything until the pins are connected to something. When viewing the pinouts please use the Digi documents (CCXP270_Hardware_Reference_Manual ) pinout definition as it describes how the pins have been connected and defined.