Build the ISA, GS, ST, and SE envelope layers correctly and validate 999 and TA1 acknowledgment receipt before releasing a production X12 EDI batch

Verified steps

1. Construct the ISA segment with correct interchange control version number, sender and receiver ID qualifiers and IDs, and a unique ISA13 interchange control number padded to nine digits; set the ISA16 component element separator to a character that will not appear in data
2. Wrap each functional group with a GS segment that carries the functional identifier code matching the transaction type, the group control number in GS06, and the implementation convention reference matching the adopted guide version such as 005010X279A1
3. Open each transaction set with ST01 set to the transaction set identifier code and ST02 set to a unique four-digit control number within the group; close with SE01 set to the total segment count including ST and SE
4. After submission, wait for the TA1 interchange acknowledgment which signals whether the ISA envelope was syntactically accepted or rejected at the interchange level before any functional processing occurs
5. Parse the 999 functional acknowledgment for each GS group: read the AK1 loop to match the group, then each AK2/AK5 transaction set loop; AK501 value A means accepted, E means accepted with errors, R means rejected
6. If any transaction set is rejected in the 999, use AK3 and AK4 segments to identify the exact loop, segment position, element position, and error code before correcting and resubmitting only the rejected transactions