2.5.1.3. Section 3: Capability Discussion. Same as the regular CDD with the exception of the following:

2.5.1.3.1. Provide a table that briefly describes the contribution this IS-CDD makes to the fulfillment of CR described in the applicable ICDs or analysis of the capability gaps as illustrated in Figure B-15.

For reference or comparison, below is what the JCIDS Manual says for the CDD 2021 itself:

2.5.3.1.2. Provide updated DoDAF CVs consistent with the CDD.