The document mentions the software version 8.10.151.0 in the context of the problem with the SDA AP disconnected from WLC alert on DNAC. This version is listed in the provided software version list and appears to be relevant to the issue described. Therefore, 8.10.151.0 is selected as the principal software version discussed in the documents. The problem details indicate that the customer has confirmed the closure, suggesting that this version is the one being referred to in the context of the issue and its resolution. Hence, 8.10.151.0 is identified as the principal software version in the documents provided.
The principal software version discussed in the documents is 8.10.151.0 as it is mentioned in the context of the SDA AP disconnected from WLC alert on DNAC and is present in the provided list.