Dear all,
I constructed a Social Accounting Matrix (SAM) from my country’s official Supply and Use Tables (SUT). One of the cells in the SAM has a negative value, which is inherited directly from the SUT rather than resulting from an error in my calculations.
I am using this SAM to calibrate and run the IFPRI Standard CGE model. However, the model exhibits calibration errors due to the negative entry. If I change the negative value to a positive value or replace it with zero, the SAM becomes unbalanced.
Has anyone encountered a similar issue? What is the appropriate way to handle a negative value inherited from an official SUT when constructing a SAM for the IFPRI CGE model? Should it be reallocated, treated as a FISIM or statistical adjustment, or handled in another way?
Any advice, references, or examples would be greatly appreciated.