Each SOW shall constitute a separate agreement and shall stand alone with respect to any other SOW entered into under this Agreement. An MSA allows for some variability in the specific details of each project via the SOW.The Contractor shall execute the work described in the. This is going to be how to fill out the agreement of sale for pennsylvania. An SOW spells out the specific tasks, objectives, and responsibilities for a particular project. Services and Deliverables. Employer Corporate Certification.